From publisher blurb:
An alien invasion is usually depicted as a terrifying and horrible event for the people of Earth, but it’s really a lot of fun from the aliens’ point of view. In IMP, you get to be a tiny alien invader set loose on an unsuspecting planet. You are encouraged to inflict as much carnage and destruction as you can imagine. Use any weapon you can find against every target you see. The invasion has begun, and you are it! You are an imp!
IMP is a role-playing game designed for use with the QAGS Second Edition rules. In this game, an otherwise mild-mannered player can take on the part of a vicious alien creature obsessed with destruction and mayhem. In addition to providing tons of things to fight and places to destroy, this book gives adventure scenarios, vehicle rules, tips for players and GMs, random mutation tables, and a paper doll. Yes, we said a paper doll. Stop giving us that look.