Holiday Havoc! Card Game You are all Gremlins this Christmas, and its time to make mischief around town! Play cards to invade the movie theater, multiply in the public pool, or to cut the towns power. Watch out for Gizmo, that goody two-shoes is trying to stop your troublemaking at every turn. By the end of the game, if you have caused the most chaos around town, you are the meanest greenest Gremlin of them all!