From publisher blurb: Need a new alien race for your IF game, well Avalon is here to save the day with Alien Races. Fully detailed and playable as a PC character, these aliens offer more then the typical bug-eyed alien. These alien races offer a detailed background and playable features so they can fit right into your game. Add some cool and interesting aliens to the mix and gather up all the aliens offered in this series. This version of the product is suited for the Pathfinder version of IF.