Tickle, Tickle! This is less of a game, and more of just a way to get your rat all wound up. All you do is a quick, gentle, short tickle, using your fingers or a feather toy, tickling from their head to their tail, exclaiming "kutchy, kutchy, koo!" Some rats will get very excited by this, and will hop straight up into the air, or rapidly wag their tail. This can be a good lead in to other games.