Snake
Well, now that you know my fun Scriptris story, I won't bore you with the details here, other than I took the "engine" of Scriptris to make this game work.
Premise of the game is the same as every Snake game ever – eat the "food" (typically a dot or square) and the snake grows larger. Don't crash into yourself. Edges are ok in this version; you'll just reappear on the other side of the screen. Arrow keys control your snake.
Here's Snake.