Check out @samin8or's original project: https://scratch.mit.edu/projects/1109807848 As usual with these 100-block projects, I took it as a challenge to reduce the number of blocks. I'm sure some blocks could still be shaved, but I reduced the block count from 97 to 66, by removing the two Checkpoint sprites, and one of the Ball sprites. Instead, the current Ball sprite creates a clone. And the checkpoints are on the Backdrop. This leaves plenty of room for @samin8or to add some cool features, within the 100 block limit. Original instructions: Use the arrow keys to move both players at the same time. The goal is to reach the checkpoint (the triangle) on both sides of the screen to move to the next level.