Anyone interested in the Marvel multiverse would probably enjoy this book. For people that only care about a single Marvel universe, this is probably not worth the time to read it. The story explorers the idea of three major Marvel villains (Dr. Doom, Magneto, and the Red Skull) gaining the power of a Cosmic Cube and exploring the worlds/realities they create with the power. With this premise, the entire book acts as a “What-if” story and thus has no impact to any official Marvel universe. As a result, this book works as a fun, but ultimately pointless read.
It was entertaining to explore Steven A. Roman’s take on different Marvel Characters. It was also interesting how he incorporated traits from characters that I am familiar with into original, constructed worlds that have obvious impacts on the characters. This was especially evident when dealing with the three main villains and the world that they each created with the Cube.
Ultimately, I would probably not recommend this book. It definitely has some fun moments and explores some interesting concepts, but between having a relatively weak ending and a zero impact to official canon, this book is too long and requires too much commitment of the reader. This book could have easily been edited down to a book a third of length and had the same impact without the extensive reader commitment.