Kongregate free online game Idle Bouncer - Make the balls jump, upgrade and change the world! Drop the balls to generate energy with each. Idle Bouncer. Bounce the ball to generate energy each time it bounces off the ground - the higher it jumps, the more energy it generates. Buy new balls, upgrade. Bouncer Idle is a small unique idle game, built with a minimalist art style. Bouncer Idle is for those looking to relax for a short sweet incremental game made to.