It turns out these kinds of games are a bit complicated... Arrow keys to move or use the mouse. Use the button on the lower right to switch controls. If you beat the game, see inside, go to the ball sprite, find the first repeat block, and set it to repeat more times. Or less times, for a lower difficulty.
Credit to bouncy rush for inspiration. ---------Change Log----------- 1.0.1: Yellow line bug fix 1.0.2: Changed the bouncing to match bouncy rush's 1.0.3: R A I N B O W 1.0.4: Platforms shrink as you go higher 1.0.5: Made all platforms green 1.0.6: Added moving platforms 1.0.7: Bug fix 1.0.8: Bug fix fix lol 1.0.9: pen display 1.1: Added background 1.1.1: Ball bounces off walls 1.1.2: Added green moving platforms 1.1.3: Added blue platforms 1.1.4: Fixed white platform bug 1.1.5: Fixed another white platform bug lol 1.1.6: Generates after you beat high score 1.1.7: Made the yellow line disappear when you passed it. 1.1.8: Added loading screen 1.1.9 : Added yellow platforms 1.2: Fixed generation bug 1.2.1: Generates platforms as you go 1.2.2: Generates platforms in groups of 8 1.2.3 (WIP): More generation fixes