This book is outstanding. It's exactly what I have been looking for in a science fiction game. The artwork is inspiring without being overbearing and the rules are well laid out. The game does not seem like a clunky reskin of the fantasy elements of D&D.

It has one additional benefit that may not be immediately obvious: you can port the alien species rules into your fantasy-themed game to create interesting new character races!

Well done, Scrivened. Time to start me a new campaign...