From publisher blurb:
Sometimes you need a new alien race for your IF game, and here comes Avalon Games, ready to save the day with new Alien Races. Fully detailed and playable as a PC character, these aliens offer more than the typical bug-eyed humanoid. Each race offers 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 5e D&D version of IF.