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Game On #5
Only on Gameday
Not yet published
Expected 6 Jan 26An all-new GAME ON sports romance from BookTok sensation and New York Times bestselling author Kristen Callihan with high emotional stakes and a slow-burn, steamy heat level.
A ‘fake’ wife is just the trick to help a bad-boy football player clean up his image and let his career take off. Trouble is, there’s nothing ‘fake’ about the way August feels about his pretend wife. Game on.
August Luck, known to fans as “Luck”, is on the brink of top draft pick, tons of money heading his way, talent galore, but he keeps messing it up with bonehead moves and looking out of control in public. Problem is, he can’t get out of his own way. To clean up his image and calm him down, his agent decides Luck needs a temporary ‘wife’.
Penelope Marrow, the girl next-door he's known since they were kids, is the safe option. Pen is the only person who's ever put him in his place, and she disapproves of him, so there's no chance she'll cling. He didn't count on wanting her to stay. Question is, will she play ball? Just the idea turns his knees to jello.
Game on...
The GAME ON series by Kristen Book 1: The Hook Up Book 2: The Friend Zone Book 3: The Game Plan Book 4: The Hot Shot Book 5: Only on Gameday
A ‘fake’ wife is just the trick to help a bad-boy football player clean up his image and let his career take off. Trouble is, there’s nothing ‘fake’ about the way August feels about his pretend wife. Game on.
August Luck, known to fans as “Luck”, is on the brink of top draft pick, tons of money heading his way, talent galore, but he keeps messing it up with bonehead moves and looking out of control in public. Problem is, he can’t get out of his own way. To clean up his image and calm him down, his agent decides Luck needs a temporary ‘wife’.
Penelope Marrow, the girl next-door he's known since they were kids, is the safe option. Pen is the only person who's ever put him in his place, and she disapproves of him, so there's no chance she'll cling. He didn't count on wanting her to stay. Question is, will she play ball? Just the idea turns his knees to jello.
Game on...
The GAME ON series by Kristen Book 1: The Hook Up Book 2: The Friend Zone Book 3: The Game Plan Book 4: The Hot Shot Book 5: Only on Gameday
416 pages, Paperback
Expected publication January 6, 2026
11 people are currently reading
464 people want to read
About the author
Kristen Callihan
29 books14k followersKristen Callihan is an author because there is nothing else she'd rather be. She is a RITA winner and three-time nominee and winner of two RT Reviewer's Choice awards. Her novels have garnered starred reviews from Publisher's Weekly and the Library Journal, as well as being awarded top picks by many reviewers. Her debut book FIRELIGHT received RT Magazine's Seal of Excellence, was named a best book of the year by Library Journal, best book of Spring 2012 by Publisher's Weekly, and was named the best romance book of 2012 by ALA RUSA. When she is not writing, she is reading.
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Displaying 1 - 30 of 36 reviews
October 1, 2025
2/5 Stars
Penelope goes home with the intention of visiting her childhood friends. She wasn’t counting on their older brother, August, being home. After an embarrassing video of August goes viral, he’s asked to clean up his act. August comes up with the bright idea of proposing to Penelope because there is nothing more real than a fake engagement.
Only on Gameday is a fake dating book. I found this book juvenile for my personal taste, with its countless nicknames for each character and long text threads throughout.
Several characters are full of charisma, and I think there was too many to create well rounded relationships with all of them. The pacing was steady, yet it went nowhere and everywhere all at once. I felt there was no defining climax. It made the book feel like there were chapters missing. The Luck family is great and full of life. I’m wishing the best for their stories if those are to come!
A warm thanks to Kristen Callihan, Harlequin Trade Publishing, and NetGalley for this ARC!
Penelope goes home with the intention of visiting her childhood friends. She wasn’t counting on their older brother, August, being home. After an embarrassing video of August goes viral, he’s asked to clean up his act. August comes up with the bright idea of proposing to Penelope because there is nothing more real than a fake engagement.
Only on Gameday is a fake dating book. I found this book juvenile for my personal taste, with its countless nicknames for each character and long text threads throughout.
Several characters are full of charisma, and I think there was too many to create well rounded relationships with all of them. The pacing was steady, yet it went nowhere and everywhere all at once. I felt there was no defining climax. It made the book feel like there were chapters missing. The Luck family is great and full of life. I’m wishing the best for their stories if those are to come!
A warm thanks to Kristen Callihan, Harlequin Trade Publishing, and NetGalley for this ARC!
October 10, 2025
I don’t know why this isn’t the start of a new series. It has no connection, and so much time has passed, to the previous books and spends a lot of time setting up an entirely new cast of characters. It’s an odd choice.
There’s a lot going on and it doesn’t have a good flow. A little bit of everything just thrown in and mixed about. I craved more focus and a solid build. There were many times throughout where I feel like a previous book or backstory were missed.
The constant “he’s finally paying attention to me! But that doesn’t mean he likes me. He’s flirting with me! But obviously he doesn’t mean it. He’s stating his attraction to me! But that’s not real.” was sooooo tiring.
The sandwich. A freaking sandwich! I will not give spoilers… but I’ll just say this was the moment the book hit two stars ‘cause I was laughing so much at the absurdity. I cannot.
Listen, I LOVE Callihan’s novels. Her VIP series is one of my faves and I’ve reread the earlier football books numerous times. But I don’t know what happened here. This was not it.
* I received a free early copy from the publisher.
There’s a lot going on and it doesn’t have a good flow. A little bit of everything just thrown in and mixed about. I craved more focus and a solid build. There were many times throughout where I feel like a previous book or backstory were missed.
The constant “he’s finally paying attention to me! But that doesn’t mean he likes me. He’s flirting with me! But obviously he doesn’t mean it. He’s stating his attraction to me! But that’s not real.” was sooooo tiring.
The sandwich. A freaking sandwich! I will not give spoilers… but I’ll just say this was the moment the book hit two stars ‘cause I was laughing so much at the absurdity. I cannot.
Listen, I LOVE Callihan’s novels. Her VIP series is one of my faves and I’ve reread the earlier football books numerous times. But I don’t know what happened here. This was not it.
* I received a free early copy from the publisher.
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June 10, 2025WHEN ARE WE GETTING THIS??? I NEED DATE!!!
October 6, 2025
After finishing The Hot Shot, I could not wait to see what the next book in the Game On series would bring. So when I heard Only On Gameday was coming out, I was instantly excited. I have really fallen in love with sports romances lately, and this one hit all the right notes for me. I am so happy to say it did not disappoint.
Up until now, The Hot Shot was my favorite in the series, but I think this one just stole that spot. From the first few chapters, I was hooked. It also happens to feature one of my favorite tropes, the fake relationship, which made it even better. I loved both of the main characters, and their chemistry was so good. Their moments together were fun, flirty, and sweet in all the best ways.
The side characters were great too. They added so much personality to the story and made it feel like a world I could happily step into. I especially loved August’s family and how much heart they brought to the book. I really hope we get to see more of them in future stories because they were such a bright spot.
Overall, I absolutely loved this one. It had charm, emotion, and a romance that made me smile the whole way through. I cannot wait to see what comes next in this series.
**I voluntarily read and reviewed an advanced copy of this book. All thoughts and opinions are my own.**
Up until now, The Hot Shot was my favorite in the series, but I think this one just stole that spot. From the first few chapters, I was hooked. It also happens to feature one of my favorite tropes, the fake relationship, which made it even better. I loved both of the main characters, and their chemistry was so good. Their moments together were fun, flirty, and sweet in all the best ways.
The side characters were great too. They added so much personality to the story and made it feel like a world I could happily step into. I especially loved August’s family and how much heart they brought to the book. I really hope we get to see more of them in future stories because they were such a bright spot.
Overall, I absolutely loved this one. It had charm, emotion, and a romance that made me smile the whole way through. I cannot wait to see what comes next in this series.
**I voluntarily read and reviewed an advanced copy of this book. All thoughts and opinions are my own.**
October 15, 2025
Honestly, it's been sooooo long since I've read the others in the series, but there really isn't any need to do a refresher or read the others if you want to jump into this one. I actually remember loving this series and the authors other work, especially her steampunk historical series.
This one felt a little disconnected, or maybe it was me that felt disconnected from the story. Found it hard to connect to any of the characters, especially the leads. It wasn't bad but it didn't blow me away. Everything felt very surface level. Still, it was a cute enough story that goes by fast. A light and quick read.
Thank you to the publisher and netgalley for the arc!
This one felt a little disconnected, or maybe it was me that felt disconnected from the story. Found it hard to connect to any of the characters, especially the leads. It wasn't bad but it didn't blow me away. Everything felt very surface level. Still, it was a cute enough story that goes by fast. A light and quick read.
Thank you to the publisher and netgalley for the arc!
October 1, 2025
There are so many good parts of this book that it makes the fact that the romance feels disjointed really frustrating because the pieces are all there, but it needed at least one more path to make the beginning to the end make sense.
Thanks to Netgalley and the publisher for the e-ARC!
Thanks to Netgalley and the publisher for the e-ARC!
October 15, 2025
It was so exciting to see that Kristen Callihan was returning to sports romance with this new book in her Game On series. I loved every book prior to Only on Gameday so I was all in for this fake relationship, football romance.
If you are a fan of fake relationship romance books, this is a romance for you and the best part of this love story. I’m a sucker for romance books where a star athlete decides that he needs a fake fiancé to clean up his image which is the exact idea that enters August’s head when he opens the door to his family home and sees Penelope – the girl he grew up with but always kept at a distance.
Their slow burn romance was sweet and enjoyable to read however I wish Callihan gave us either more history or more moments in the present where they were actually together to build a believable love story. What we learn about August, his “acting out” seems so out of character and just seemed to disappear after that beginning chapter.
While I liked the fake fiancé storyline this book had a very slow start. The beginning was bogged down with a slow build up to their agreement to pretend to be engagement and with random side events such as Penelope’s weird roommate and her frog and random events on Penelope’s college campus. It was hard to really get a handle on Penelope’s character too. She loved to quote movies but what was she really doing with her life? I was confused.
I think all the elements for a good romance where there but it didn’t quite all come together seamlessly like I expect in a Kristen Callihan book.
This book does however have me itching for August brothers’ stories as their character development was strong and already has me clamoring for March and January’s stories.
Because this book feels like it’s launching the Luck family series and doesn’t tie in with the previous Game On series, I am curious to know why it is considered part of this series and not just its own new one. I was disappointed that there wasn’t really any connection besides the football angle (at least that I could tell or remember) but that is on me thinking that there would be.
Overall it was a cute story. Not one I’ll likely remember other than to look forward to March and January’s books.
*I received an advanced copy. All opinions are my own.
If you are a fan of fake relationship romance books, this is a romance for you and the best part of this love story. I’m a sucker for romance books where a star athlete decides that he needs a fake fiancé to clean up his image which is the exact idea that enters August’s head when he opens the door to his family home and sees Penelope – the girl he grew up with but always kept at a distance.
Their slow burn romance was sweet and enjoyable to read however I wish Callihan gave us either more history or more moments in the present where they were actually together to build a believable love story. What we learn about August, his “acting out” seems so out of character and just seemed to disappear after that beginning chapter.
While I liked the fake fiancé storyline this book had a very slow start. The beginning was bogged down with a slow build up to their agreement to pretend to be engagement and with random side events such as Penelope’s weird roommate and her frog and random events on Penelope’s college campus. It was hard to really get a handle on Penelope’s character too. She loved to quote movies but what was she really doing with her life? I was confused.
I think all the elements for a good romance where there but it didn’t quite all come together seamlessly like I expect in a Kristen Callihan book.
This book does however have me itching for August brothers’ stories as their character development was strong and already has me clamoring for March and January’s stories.
Because this book feels like it’s launching the Luck family series and doesn’t tie in with the previous Game On series, I am curious to know why it is considered part of this series and not just its own new one. I was disappointed that there wasn’t really any connection besides the football angle (at least that I could tell or remember) but that is on me thinking that there would be.
Overall it was a cute story. Not one I’ll likely remember other than to look forward to March and January’s books.
*I received an advanced copy. All opinions are my own.
October 9, 2025
I loved this author’s books in this series, but this one felt like a departure from the rest. Within the first few chapters, information was alluded to but never explicitly explained and it wasn’t groundbreaking information once it was revealed. It was clear that was a tactic to keep the reader engaged, however, refraining from sharing this information left me feeling disconnected from the characters in the initial scene where they see each other again. The build up in key scenes just fell short.
There were moments in the book where I was starting to get excited for the chemistry building between the characters (the cute question drop at the end of the airplane ride; loved and giggled!), but then in the next chapter I would be let down and frustrated with the antics of both Pen and August. I kept having to remind myself that Pen and August were in their early 20’s, which means there is a certain level of immaturity and insecurity. If you keep that piece of information in your mind, the book is enjoyable. The banter was great in this book. The wit and the relationship between the siblings was what I enjoyed most about this book.
I liked that this was a slow burn. The anticipation in that regard was great. Also, I loved that this wasn’t a third act break up. It seemed that the characters had a bit of growth throughout the story to avoid that. Thank the heavens.
For me, March stole the show. I LOVED him. I almost would’ve preferred him as the main male character but then I realized that the author could’ve had this book be the start of a new series that follows each Luck family member (maybe that is the case and I just don’t have all the information). I’m VERY interested in reading books about March and January. I loved them so much and would absolutely read those books.
There were moments in the book where I was starting to get excited for the chemistry building between the characters (the cute question drop at the end of the airplane ride; loved and giggled!), but then in the next chapter I would be let down and frustrated with the antics of both Pen and August. I kept having to remind myself that Pen and August were in their early 20’s, which means there is a certain level of immaturity and insecurity. If you keep that piece of information in your mind, the book is enjoyable. The banter was great in this book. The wit and the relationship between the siblings was what I enjoyed most about this book.
I liked that this was a slow burn. The anticipation in that regard was great. Also, I loved that this wasn’t a third act break up. It seemed that the characters had a bit of growth throughout the story to avoid that. Thank the heavens.
For me, March stole the show. I LOVED him. I almost would’ve preferred him as the main male character but then I realized that the author could’ve had this book be the start of a new series that follows each Luck family member (maybe that is the case and I just don’t have all the information). I’m VERY interested in reading books about March and January. I loved them so much and would absolutely read those books.
September 30, 2025
Note: This review is for an ARC and is my unbiased opinion.
I was so, so happy to hear that Kristen Callihan was releasing a new book. The fact that it was going to be part of the Game On series made that news even sweeter. I have missed her writing so much and it was a joy to be reading it once again. Only on Gameday was well worth the wait.
What did I love about this book? EVERYTHING. August and Penelope were characters I could have read multiple books about. They had this awkward history having grown up together that added to the excitement of them beginning a fake relationship when they were both harboring secret, years long crushes on each other. It was all so adorable. They knew each other, but the way they connected even deeper emotionally throughout this book felt so special. There was a quiet intensity in their interactions that was swoony and fun. Each had so much going on personally and the way those things mixed together played out perfectly. August and Penelope were so much fun to read about.
A big thing that made August and Penelope's romance so much fun were the side characters. August's family was hilarious, from their names to their actions. They were a rowdy bunch and contributed a multitude of humorous moments to the story. I adored them so much that I'm hoping Callihan wants to give us books about each and every one of them... and sooner than later!
Only on Gameday was such a joy to read. Fans of this series are going to love it, and new readers can start right here and fall in love.
I was so, so happy to hear that Kristen Callihan was releasing a new book. The fact that it was going to be part of the Game On series made that news even sweeter. I have missed her writing so much and it was a joy to be reading it once again. Only on Gameday was well worth the wait.
What did I love about this book? EVERYTHING. August and Penelope were characters I could have read multiple books about. They had this awkward history having grown up together that added to the excitement of them beginning a fake relationship when they were both harboring secret, years long crushes on each other. It was all so adorable. They knew each other, but the way they connected even deeper emotionally throughout this book felt so special. There was a quiet intensity in their interactions that was swoony and fun. Each had so much going on personally and the way those things mixed together played out perfectly. August and Penelope were so much fun to read about.
A big thing that made August and Penelope's romance so much fun were the side characters. August's family was hilarious, from their names to their actions. They were a rowdy bunch and contributed a multitude of humorous moments to the story. I adored them so much that I'm hoping Callihan wants to give us books about each and every one of them... and sooner than later!
Only on Gameday was such a joy to read. Fans of this series are going to love it, and new readers can start right here and fall in love.
October 6, 2025
Slow-burn sizzle meets emotional grit in Kristen Callihan’s latest GAME ON romance
Kristen Callihan delivers another addictive installment in her GAME ON series with Only on Gameday, blending the high-stakes world of pro football with a tender, slow-burning romance that’s equal parts steamy and heartfelt.
August “Luck” Luck is the quintessential bad-boy athlete—brimming with talent but constantly sabotaging his own rise. Enter Penelope Marrow, the childhood friend turned “fake” wife who’s supposed to keep him grounded. What starts as a PR stunt quickly spirals into something deeper, with Callihan masterfully teasing out the tension between two people who know each other too well to pretend for long.
The chemistry between August and Pen is electric, but it’s the emotional depth that elevates this story. Their shared history adds layers of vulnerability, and watching August unravel in the face of real feelings is both frustrating and endearing. Penelope’s strength and wit make her a standout heroine—she’s not here to save him, but she might just be the one who helps him save himself.
While the pacing occasionally lags in the middle, the payoff is worth it. The slow-burn romance simmers until it boils over in scenes that are as emotionally raw as they are sexy. Fans of the series will appreciate the cameos and continuity, but newcomers can dive in without missing a beat.
A solid 4-star read that scores big on heart, heat, and redemption. Game on, indeed.
Kristen Callihan delivers another addictive installment in her GAME ON series with Only on Gameday, blending the high-stakes world of pro football with a tender, slow-burning romance that’s equal parts steamy and heartfelt.
August “Luck” Luck is the quintessential bad-boy athlete—brimming with talent but constantly sabotaging his own rise. Enter Penelope Marrow, the childhood friend turned “fake” wife who’s supposed to keep him grounded. What starts as a PR stunt quickly spirals into something deeper, with Callihan masterfully teasing out the tension between two people who know each other too well to pretend for long.
The chemistry between August and Pen is electric, but it’s the emotional depth that elevates this story. Their shared history adds layers of vulnerability, and watching August unravel in the face of real feelings is both frustrating and endearing. Penelope’s strength and wit make her a standout heroine—she’s not here to save him, but she might just be the one who helps him save himself.
While the pacing occasionally lags in the middle, the payoff is worth it. The slow-burn romance simmers until it boils over in scenes that are as emotionally raw as they are sexy. Fans of the series will appreciate the cameos and continuity, but newcomers can dive in without missing a beat.
A solid 4-star read that scores big on heart, heat, and redemption. Game on, indeed.
October 5, 2025
3.5⭐
August Luck lo tiene todo: talento, fama, fortuna y una carrera de ensueño como mariscal de campo estrella de la NFL. Pero una noche de imprudencia y un video viral amenazan con destruir su reputación. Para limpiar su imagen, necesita una distracción pública… y ahí entra Penelope March.
Pen ha conocido a los Luck desde siempre; ha sido amiga cercana de la familia, especialmente del hermano mayor de August. Callada, racional y nada amante del drama, es lo último que uno esperaría ver junto al chico dorado del fútbol americano. Sin embargo, cuando August le propone fingir un compromiso para calmar el escándalo mediático, Pen acepta, convencida de que solo será un acuerdo temporal.
Lo que ninguno anticipa es la intensidad de la conexión que surge entre ellos. Entre entrenamientos, cámaras y juegos decisivos, la línea entre la mentira y el deseo empieza a difuminarse. Lo que comenzó como una estrategia se convierte en algo más profundo, más real… pero también más arriesgado. Porque en el amor, igual que en el fútbol, solo se gana cuando uno se atreve a jugar con el corazón.
___
Es una lectura ligera, sin dramas entre los protagonistas y por lo mismo no se necesitaba alargarla tanto, le quitaría unas 100 páginas.
Thanks to NetGalley, the publisher and the author for the ARC in exchange for an honest opinion.
August Luck lo tiene todo: talento, fama, fortuna y una carrera de ensueño como mariscal de campo estrella de la NFL. Pero una noche de imprudencia y un video viral amenazan con destruir su reputación. Para limpiar su imagen, necesita una distracción pública… y ahí entra Penelope March.
Pen ha conocido a los Luck desde siempre; ha sido amiga cercana de la familia, especialmente del hermano mayor de August. Callada, racional y nada amante del drama, es lo último que uno esperaría ver junto al chico dorado del fútbol americano. Sin embargo, cuando August le propone fingir un compromiso para calmar el escándalo mediático, Pen acepta, convencida de que solo será un acuerdo temporal.
Lo que ninguno anticipa es la intensidad de la conexión que surge entre ellos. Entre entrenamientos, cámaras y juegos decisivos, la línea entre la mentira y el deseo empieza a difuminarse. Lo que comenzó como una estrategia se convierte en algo más profundo, más real… pero también más arriesgado. Porque en el amor, igual que en el fútbol, solo se gana cuando uno se atreve a jugar con el corazón.
___
Es una lectura ligera, sin dramas entre los protagonistas y por lo mismo no se necesitaba alargarla tanto, le quitaría unas 100 páginas.
Thanks to NetGalley, the publisher and the author for the ARC in exchange for an honest opinion.
September 28, 2025
Kristen Callihan remains one of the best contemporary romance authors. Picked up her latest to break a reading slump and was not disappointed--hooked from the first chapter. So much yearning between two people who'd been family friends since childhood and had been in love with the other well before their feelings could be returned. Both August and Penelope feel like compelling, fully realized characters in their own right, and are delightful together. Their fights make sense, and as are they ways they make up after and the evolving communication that helps they realize what they mean to each other.
A note on Callihan's Game On series: her pro sports characters are not swaggering alphas (which can be a real turnoff in some of the sports romance); they are sexy and confident without being creepy and crass. Just as how her VIP series is the acme of rock star romance, her Game On series sets a high standard for how to depict complex, realistic romances set in the sports world.
I hope we get more of the Luck family, because all four of the other siblings would be perfect for their own books.
I received an advance reader copy from Netgalley for an honest review.
A note on Callihan's Game On series: her pro sports characters are not swaggering alphas (which can be a real turnoff in some of the sports romance); they are sexy and confident without being creepy and crass. Just as how her VIP series is the acme of rock star romance, her Game On series sets a high standard for how to depict complex, realistic romances set in the sports world.
I hope we get more of the Luck family, because all four of the other siblings would be perfect for their own books.
I received an advance reader copy from Netgalley for an honest review.
September 28, 2025
Sweet fake dating sports romance with all the feels! How can you not help but love August and Pen. They have this cute bantering connection thats hard to miss.
August, a total cinnamon roll, is a rising NFL star who has a moment of crazy and acts out. To help get his image back on track he ask Pen, who he has known his entire life to be his fake fiance. He helps her, she helps him, win win. Or so he thinks.
Pen, the quiet shy girl, has had a crush on August for as long as she can remember and needs a way to save her grandparents home she inherited. Along comes August with his plan and she says yes. But things get a bit to real.
There is not alot of drama or obstacles they have to overcome and if anything does pop up they talk it out and deal with it. Both are a bit reserved at times worrying if the other really wants to be there as they try to hide growing feelings. But again they communicate to each other with a bit of prodding at times from family. But their chemistry is undeniable and you want them to have their HEA.
I loved this one and would recommend 100 percent.
August, a total cinnamon roll, is a rising NFL star who has a moment of crazy and acts out. To help get his image back on track he ask Pen, who he has known his entire life to be his fake fiance. He helps her, she helps him, win win. Or so he thinks.
Pen, the quiet shy girl, has had a crush on August for as long as she can remember and needs a way to save her grandparents home she inherited. Along comes August with his plan and she says yes. But things get a bit to real.
There is not alot of drama or obstacles they have to overcome and if anything does pop up they talk it out and deal with it. Both are a bit reserved at times worrying if the other really wants to be there as they try to hide growing feelings. But again they communicate to each other with a bit of prodding at times from family. But their chemistry is undeniable and you want them to have their HEA.
I loved this one and would recommend 100 percent.
October 4, 2025
I just can't get enough of the fake dating/engaged/married trope.
And Pen and August's dual POV story did not disappoint especially since Callihan added in a dash of friends to lovers as well. If you love good banter, you will love much of their story.
August is the NFL's newest and hottest player and let's just say he has trouble adjusting and is in need of a some damage control. Enter Penelope, a childhood friend, who is asked to enter into a fake engagement to show he has settled down. What transpires is the "sweetest" (IYKYK) journey for these two as they traverse their own insecurities on their way to true love. While August is an NFL player, the sports angle does not figure as prominently into the story as other sports romances, and it is lower on the angst level. I am loving Callihan's story telling, and I am really hoping that brother Jan gets a story too. I feel like there is potential with his history.
Thank you to Harlequin Trade Publishing title from NetGalley for the advanced copy.
And Pen and August's dual POV story did not disappoint especially since Callihan added in a dash of friends to lovers as well. If you love good banter, you will love much of their story.
August is the NFL's newest and hottest player and let's just say he has trouble adjusting and is in need of a some damage control. Enter Penelope, a childhood friend, who is asked to enter into a fake engagement to show he has settled down. What transpires is the "sweetest" (IYKYK) journey for these two as they traverse their own insecurities on their way to true love. While August is an NFL player, the sports angle does not figure as prominently into the story as other sports romances, and it is lower on the angst level. I am loving Callihan's story telling, and I am really hoping that brother Jan gets a story too. I feel like there is potential with his history.
Thank you to Harlequin Trade Publishing title from NetGalley for the advanced copy.
October 5, 2025
Thank you to NetGalley, Harlequin Trade Publishing, and MIRA for the ARC in exchange for an honest review.
Kristen Callihan is always a must-read for me, and this book did not disappoint. This book is everything I want in a sports romance, and it's full of heart, heat, and humor. Kristen Callihan nails the balance of romance and humor without relying too heavily on the sports angle. If you loved her VIP series, this is another win. Can’t wait for more from the Game On world!
August is the NFL’s newest rising star—and a bit of a PR disaster. To clean up his image, he enlists Penelope, his quiet childhood friend, in a fake engagement. What starts as a win-win setup quickly becomes something more in this heartfelt, swoony story. August is a total cinnamon roll—confident without being cringey—and Pen is shy but strong in her own way. Their chemistry is effortless, and their banter is adorable. There’s minimal drama, excellent communication, and just enough tension to keep things interesting.
Read if you like:
- Dual POV
- Fake dating
- Sports romance
Kristen Callihan is always a must-read for me, and this book did not disappoint. This book is everything I want in a sports romance, and it's full of heart, heat, and humor. Kristen Callihan nails the balance of romance and humor without relying too heavily on the sports angle. If you loved her VIP series, this is another win. Can’t wait for more from the Game On world!
August is the NFL’s newest rising star—and a bit of a PR disaster. To clean up his image, he enlists Penelope, his quiet childhood friend, in a fake engagement. What starts as a win-win setup quickly becomes something more in this heartfelt, swoony story. August is a total cinnamon roll—confident without being cringey—and Pen is shy but strong in her own way. Their chemistry is effortless, and their banter is adorable. There’s minimal drama, excellent communication, and just enough tension to keep things interesting.
Read if you like:
- Dual POV
- Fake dating
- Sports romance
September 30, 2025
Only on Gameday by Kristen Callihan is the 5th book in the Game On Series. August Luck is in his rookie season as quarterback and is feeling all the pressure that comes with being the number 1 draft pick and coming from a famous football family. Penelope is in her senior year of college and attempting to find a way to pay property taxes on her grandparents home she recently inherited. Their families have been friends their entire lives and now they find themselves entwined in a fake engagement. I was really excited for this book as I have enjoyed the series, unfortunately this one was not my favorite. August and Pen are great characters and I liked reading about how their relationship grew, however I wanted more details. The whole book felt like I missed a few chapters that held key information to help bring the story together.
Thanks you NetGalley, Harlequin Trade Publishing, and the author for the ARC in exchange for an honest review.
Thanks you NetGalley, Harlequin Trade Publishing, and the author for the ARC in exchange for an honest review.
October 1, 2025
I’m new to Kristen Callihan’s books and have been devouring them, so when I saw this upcoming release on NetGalley I jumped at the chance to read it. The fact that it’s part of the Game On series made it even better!
I loved everything about this story. August and Penelope are the kind of characters I could have read multiple books about. Their shared history made their fake relationship even more exciting—especially with the years-long, secret crushes they both carried. Watching them reconnect and grow closer emotionally was so special. Their chemistry had this quiet intensity that was both swoony and fun.
August’s family was another highlight. Their antics and personalities added so much humor and warmth, and honestly, I’d love for Callihan to give us books about each one of them.
Only on Gameday was an absolute joy to read. Fans of the series will love it, and new readers can easily start here and fall in love too.
I loved everything about this story. August and Penelope are the kind of characters I could have read multiple books about. Their shared history made their fake relationship even more exciting—especially with the years-long, secret crushes they both carried. Watching them reconnect and grow closer emotionally was so special. Their chemistry had this quiet intensity that was both swoony and fun.
August’s family was another highlight. Their antics and personalities added so much humor and warmth, and honestly, I’d love for Callihan to give us books about each one of them.
Only on Gameday was an absolute joy to read. Fans of the series will love it, and new readers can easily start here and fall in love too.
October 4, 2025
Thank you so much to Kristen Callahan, the publisher, and NetGalley for giving me an early chance to read and review “Only On Gameday.”
As a long-time fan of Kristen Callahan’s Game On series, I was thrilled to discover that she had released a new book in it. This book centered around the “fake” engagement between Penelope and rookie QB August. Because of their childhood friendship and, despite the fact that they never seemed to get along, they found themselves drawn to each other and formed a mutually beneficial relationship. As their relationship progressed, it deepened, and their journey from friends to lovers was truly heartwarming. I thoroughly enjoyed this book and am eagerly looking forward to more stories in this series. There are some particularly intriguing side characters, like January, that I would love to explore further. I highly recommend this sports/football romance and rate it 4 stars.
As a long-time fan of Kristen Callahan’s Game On series, I was thrilled to discover that she had released a new book in it. This book centered around the “fake” engagement between Penelope and rookie QB August. Because of their childhood friendship and, despite the fact that they never seemed to get along, they found themselves drawn to each other and formed a mutually beneficial relationship. As their relationship progressed, it deepened, and their journey from friends to lovers was truly heartwarming. I thoroughly enjoyed this book and am eagerly looking forward to more stories in this series. There are some particularly intriguing side characters, like January, that I would love to explore further. I highly recommend this sports/football romance and rate it 4 stars.
October 6, 2025
**Only on Gameday generously provided via Netgalley**
Kristen Callihan books always brings the joy in her sports romance stories. The Luck family was perfect for this story. I loved the sibling camaraderie and the relationships they all had with the heroine. Both mains were good and had great personalities and charm. While I did enjoy this one, there were some large chunks that seemed to drag on and get redundant. Some part of the H/h storyline got a little cheesy for me too. The conflict was a bit disjointed or something through the middle and the story lost it's flow. From sort of friends to sort of lovers is a trope I enjoy and the plot here was good though. I resonated with the characters and liked them all. This one felt a bit different than the previous books in this series though so prepare for that. Callihan will always excel at sports romance though and I'd still recommend this one to those who love the genre.
Kristen Callihan books always brings the joy in her sports romance stories. The Luck family was perfect for this story. I loved the sibling camaraderie and the relationships they all had with the heroine. Both mains were good and had great personalities and charm. While I did enjoy this one, there were some large chunks that seemed to drag on and get redundant. Some part of the H/h storyline got a little cheesy for me too. The conflict was a bit disjointed or something through the middle and the story lost it's flow. From sort of friends to sort of lovers is a trope I enjoy and the plot here was good though. I resonated with the characters and liked them all. This one felt a bit different than the previous books in this series though so prepare for that. Callihan will always excel at sports romance though and I'd still recommend this one to those who love the genre.
October 13, 2025
Many thanks to Kristen Callihan, Harlequin Trade Publishing, and NetGalley for this ARC!
I was so excited when I saw that there was a new Kristen Callihan book coming out. I really loved all of her previous books and have been waiting patiently for more for quite a while now.
It took me a few chapters to get into this one. The beginning didn't grab me right away. Not a whole lot happens. The characters are early 20's but felt pretty juvenile to me. Most of the book is leading up to Penny and August getting together but then when they do, it really went from zero to 100 in 2 pages. I actually went back to make sure I didn't miss something with how quickly things progressed.
I didn't realize this was a continuation of the Game On series since there's no connection to any of the previous characters. I was hoping this would be a new series with all the Luck siblings.
Overall, I enjoyed the book. I'll definitely read the next one Kristen Callihan puts out, too.
I was so excited when I saw that there was a new Kristen Callihan book coming out. I really loved all of her previous books and have been waiting patiently for more for quite a while now.
It took me a few chapters to get into this one. The beginning didn't grab me right away. Not a whole lot happens. The characters are early 20's but felt pretty juvenile to me. Most of the book is leading up to Penny and August getting together but then when they do, it really went from zero to 100 in 2 pages. I actually went back to make sure I didn't miss something with how quickly things progressed.
I didn't realize this was a continuation of the Game On series since there's no connection to any of the previous characters. I was hoping this would be a new series with all the Luck siblings.
Overall, I enjoyed the book. I'll definitely read the next one Kristen Callihan puts out, too.
October 15, 2025
Im so glad Kristen Callihan started writing again...and can we please get Whip's book from the VIP series?!?!?!
This story follows August and Penelope who are family friends and have know each other forever. They both secretly harbored feelings for each other and cannot FATHOM that the others might like them. August decides that the only way to clean up his party-boy image is to enter into a fake engagement with Penelope. The best part of this story? The interaction between all the Luck siblings!
All in all this was a super cute story with a ton of lovable side characters. The whole Luck siblings need their own story. I meannnnnn I would love to see March fall head over heels for someone. My only issue?? Why make this part of the 'Game On' series when NONE of the characters crossed over? This should be the start of another series all together--Luck Dynasty?
Thank you #NetGalley for priding me with an eARC in exchange for my honest review.
This story follows August and Penelope who are family friends and have know each other forever. They both secretly harbored feelings for each other and cannot FATHOM that the others might like them. August decides that the only way to clean up his party-boy image is to enter into a fake engagement with Penelope. The best part of this story? The interaction between all the Luck siblings!
All in all this was a super cute story with a ton of lovable side characters. The whole Luck siblings need their own story. I meannnnnn I would love to see March fall head over heels for someone. My only issue?? Why make this part of the 'Game On' series when NONE of the characters crossed over? This should be the start of another series all together--Luck Dynasty?
Thank you #NetGalley for priding me with an eARC in exchange for my honest review.
October 15, 2025
I'm very disappointed to say this one fell flat for me. I was a huge fan of the previous books in this series and had really high hopes. There were some subplots that were intriguing, but the main romance was a bit lackluster. August and Penelope have been family friends since they were little, but never connected on a deeper level. When they see each other again as adults, they begin a fake engagement. I know marriage of convenience is a tough sell in contemporary romance, but this was more contrived than usual. The couple did have chemistry, but major chunks of the story were just... boring. I couldn't bring myself to care where the story went. Lastly, some of the dialogue was a bit cringy. Actual brothers do not call each other broseph in any reality, even in a joking way. I'm certainly willing to try more from this author as I've always loved her writing in the past, but this one didn't do it for me.
October 2, 2025
"Pen, you were always August's girl. You just never realized it."
I really enjoyed Penelope and August's story. I found it really sweet that they were childhood friends (or, at least, family-friends, so they've known each other all of their lives). The MMC, August, is a pro-football player in need of a sort of PR makeover, which he's decided should include a fake fiancee. He asks Penelope (or "Pen") to fill that role on the days that he has games (hence the name of the title).
This was a fun, spicy slow-burn. I also really liked the rest of August's (all month named!) siblings, especially March. Their sibling group chats were hilarious.
Thank you to NetGalley and Harlequin Trade Publishing for providing me with an ARC in exchange for my honest review. I'm looking forward to reading more by this author!
I really enjoyed Penelope and August's story. I found it really sweet that they were childhood friends (or, at least, family-friends, so they've known each other all of their lives). The MMC, August, is a pro-football player in need of a sort of PR makeover, which he's decided should include a fake fiancee. He asks Penelope (or "Pen") to fill that role on the days that he has games (hence the name of the title).
This was a fun, spicy slow-burn. I also really liked the rest of August's (all month named!) siblings, especially March. Their sibling group chats were hilarious.
Thank you to NetGalley and Harlequin Trade Publishing for providing me with an ARC in exchange for my honest review. I'm looking forward to reading more by this author!
October 7, 2025
Only on Gameday by Kristen Callihan is one of the most adorable, sweet, and heartwarming novels I’ve read in a long time. August Luck—and honestly, the entire Luck family—is the kind of family everyone wishes they could be part of. With their loving bond and witty siblings named January, March, June, and August, they’re just the most delightfully charming bunch.
Penelope is equally endearing—beautiful inside and out, yet unaware of how truly special she is. Together, she and August share a tender, slow-burn connection that’s been building since childhood, and watching their story unfold is pure joy. It’s sweet, genuine, and guaranteed to make you smile.
I’ve read some of the Game On series out of order, but now I’m eager to go back and fill in the gaps.
Thank you to Kristen Callihan, Harlequin Trade Publishing, and NetGalley for the ARC!
Penelope is equally endearing—beautiful inside and out, yet unaware of how truly special she is. Together, she and August share a tender, slow-burn connection that’s been building since childhood, and watching their story unfold is pure joy. It’s sweet, genuine, and guaranteed to make you smile.
I’ve read some of the Game On series out of order, but now I’m eager to go back and fill in the gaps.
Thank you to Kristen Callihan, Harlequin Trade Publishing, and NetGalley for the ARC!
September 29, 2025
I've loved Kristen Callihan's Game On series and the latest book is no exception although it's more of a standalone whereas the first four had characters that tied in together.
August is a newly drafted star quarterback with an image to improve. Penelope is the girl he's been in love with forever (and she with him) although both are convinced the other person doesn't like them. They grew up together and when he needs someone to improve his image, his mind immediately goes to her. What starts as a fake engagement quickly amps up into a real relationship when they realize how strongly they both feel about one another.
I loved this sports romance and hope the author continues to add to the series!
August is a newly drafted star quarterback with an image to improve. Penelope is the girl he's been in love with forever (and she with him) although both are convinced the other person doesn't like them. They grew up together and when he needs someone to improve his image, his mind immediately goes to her. What starts as a fake engagement quickly amps up into a real relationship when they realize how strongly they both feel about one another.
I loved this sports romance and hope the author continues to add to the series!
September 27, 2025
Only On Game Day is a sweet love story between August, a first year pro football quarterback, and Penelope, his long-time family friend who is finishing her last semester of college. If you’ve enjoyed the other books in Kristen’s Game On series, her latest offering will not disappoint! There’s sharp, witty dialogue between August and Penelope - a mix of humor and undeniable chemistry, as well as a fake engagement storyline and well fleshed out side characters! Beyond the banter, the characters are genuinely sweet and endearing, making it easy to root for them. A really enjoyable, propulsive read!
September 29, 2025
Thank you NetGalley and Harlequin Trade Publishing for allowing me to read and review this book. I will be honest I was not sure how I was gonna feel about this book based on the prologue and the first few chapters but honestly I loved this book! I you can’t not love Pen and Augies relationship. They are great together and have loved each other for the same amount of time. I hate Pens father but love the relationship that augusts family have with him and pen! This was a really great book and truly written well! After the first few chapters I fell in love!
September 30, 2025
This was a fun childhood friends to lovers, fake fiancé, sports rom-com. Though I liked Penelope and August something didn’t click in the story to make their past believable to me. I loved the family dynamics and entertaining sibling text threads. I did not read any of the prior books in the series but this read as a stand alone, in fact, there were so many side characters I could see this as the beginning of a new series. Even with the plot holes I found this an enjoyable, hard to put down book.
Thanks to NetGalley and Harlequin Trade Publishing for the ARC!
Thanks to NetGalley and Harlequin Trade Publishing for the ARC!
October 5, 2025
It is a real treat to have a new book from Kristen Callihan! Only on Game Day is reminiscent of other books in the Game On series, but Only on Game Day is populated with a new cast of characters. The plot is simple, the arc is somewhat contrived and the resolution lacks a lot of depth. However, for a college aged, or just graduated cast, the simplicity works. The strength of the book is the interactions of the Luck family. Fingers crossed that Callihan now swings back to finish up her VIP series.
October 6, 2025
I really enjoyed this. I’ve read Hot Shot and this is just as good. This book has a lot of charm and romance. Penelope comes back home to visit her friends from childhood and runs into her friend’s older brother who she thought wasn’t gonna be there. When a super embarrassing video of August goes viral on the internet, he is being told to clean up his act. Alas, he asks Penelope for a fake engagement. These characters are charismatic with relationships that are very well rounded.
Thank you to NetGalley for allowing me to read and share my thoughts.
Thank you to NetGalley for allowing me to read and share my thoughts.
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