Like classic Tetris: Use the arrow keys to move and rotate the falling shapes. Fill horizontal rows with squares so they will be deleted and prevent your stack from becoming too tall. Unlike canonical Tetris, this project doesn't keep score, and you can't rotate a shape if it would bump into wall while rotating.
Originally called Simple Tetris. I wanted to see if programming Tetris entirely with clones and sprite-touching would make it simple. But this project didn't turn out simple.
