There is no designated GM in this game. Instead, all the players share GM duties by bidding to be "Class Captain" for a scene. As Class Captain, you can decide what your fellow players are up against in each scene. And whenever you like, you can let someone else take over as Class Captain and try out their ideas.
PDF: Buy Laser Kittens at DriveThruRPG!
Softcover: Buy Laser Kittens at Indie Press Revolution!
Setup materials: Character sheets, House sheet, Laser/NPC/class/situation lists
Quickstart scenario: Rats in the Walls
Quickstart scenario: Pennsylvania Avenue School for Wayward Kittens
Quickstart scenario: Cats In Space
To play, you'll need printed copies of the character sheets and house sheet, pencils, and two decks of regular (poker) playing cards.