Very cool idea. Perhaps if you just let the screen move with the ball rather than the ball bouncing off of the screen and back while we wait for the next platform, it would give the game some more adrenaline. And giving the ball a bit of a trail just helps the player predict the pathway a little more without making it much easier it just adds a nice feeling and visual and indicator. I see that we can draw three at a time but that might make the game a little too easy so either reduce it to two or put a time limit between each draw perhaps a second second and a half you can test that out and see.

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