The Shadow Fey arrive and turn the city upside down―and their ambassador demands that the player characters explain themselves for interfering in a legitimate assassination! So begins the looking-glass adventure that takes 7th to 10th level adventurers to the Realm of Shadows.
This inventive take on courtly combat and sandbox roleplaying More than 60-location map of the Courts, fully detailed with 100+ NPCs More than 40 combat and roleplaying encounters Dozens of new monsters your players have never seen! Demon lovers and dangerous liaisons for those who seek them Jealous rivals, a quick-play dueling system, and the King and Queen of Shadows A Status system to track player character prestige―and new Status powers!
Enter the world of shadows, and play the 5th Edition of the world’s first roleplaying game on a whole new level!
More than 140 pages of real action and adventure by designers Wolfgang Baur and Dan Dillon.
This is a book length adventure for characters 7th to 10th level published by a third party; Kobold Press. I picked this up following a wave of buying of Kobold's press material for 5th edition. There is no doubt in mind that what Kobold Press is doing for 5e is better than WotC is doing. My understanding is that this adventure was originally published for 4th edition and this is the "translation" into 5th. I believe it has also been translated into Pathfinder.
As far as I am concerned it is the best adventure I have ever read. To give some perspective on this I have been playing D&D off and on since the old box sets for about 37 years. Courts of the Shadow Fey is primarily sandbox in style which is part of the reason why it is so long as you are not expected to use all of it. Also, everything is fully explained and it even goes so far as to repeat monster stats so that they are always next to the encounter and you don't have to go paging through the books for them as you do with WotC adventures. Virtually, the whole thing takes place in the court of the shadow fey, essentially the unseelie court. It is not going to appeal to those who don't like fey or court type interactions. If your players are dialogue hating murder hobos it is the antithesis of that style of play. However, I don't care for that style and this is a perfect example of a sandbox adventure with a compelling and richly detailed location. Some of it is brilliant. For instance, at one point the PCs attend a dinner party. Just the menu for that party is better than most adventures.
I haven't had a chance to run it yet, because I just picked it up and read it so this review is based off running it and not playing it but it really is the best adventure I have ever read based on how it is written on the page. Very, very impressive.