Scratch encourages tinkering by having everything be open source and letting you change scripts while the project is running. I love this, and I've always wanted to make a game that you beat by modifying the game itself. This game challenges you to craft a sprite that will make the cat's code successfully run. It's a puzzle game; without changing the code in the cat, how can you configure the new sprite to solve all of its puzzles? Make a remix and see if you can solve it.