Side Scrollers Mario-style games, where the player moves across the room and jumps across platforms avoiding dangers while collecting bananas.
Action/Adventure Pitfall-inspired action as the player traverses platforms. Might include weapons, small babies and bananas. Yes, lots of bananas.
Endless Running Games similar to Temple Run. The player competes for high score without any real objectives. Instead of coins, we'll probably use . . . wait for it . . . b . . a . . n . . a . . n . . a . . s . . ! Yes, BANANAS!
Tower Defense Plants vs. Zombies-style action as the player must defend their home from invading forces. Probably things/people/zombies/creatures/banana-munchers trying to steal MY bananas.
Others Send me your other great ideas. It helps if they include bananas and the art of ninjitsu. In fact if the game does include bananas and ninjitsu, I will consider thinking about pondering about your game concept.

Until later, fellow simians!