Get the good guys to land on you. Your banana must be overlapping a good guy when the good guy stops moving. It doesn't count when they first jump onto the board.
Don't let bad guys (red) land on you.
Reach 100 points to unlock ROTTEN BANANA MODE! (The button is under the score).
Tips
Acquire more points at higher difficulty levels and for peeling smaller good guys.
Bounce-Back! When you are against a blue wall, move in the direction of the wall to bounce the opposite direction.
Crossover! When you are next to a corner
↬
↬
↫
↫
This will bump you diagonally. When you are next to one, move toward it.