Press Start To Begin. Use the Arrow Keys to control Blue, and WASD (On QWERTY keyboards) and ZQSD (On AZERTY keyboards) to control Black. Both cubes can stand on green, Blue can stand on black, and Black can stand on blue. Touch the Pink/Purple to advance to the next level. Press space to teleport Blue to Black, and E to teleport Black to Blue. For all you cheaters, you can skip a level in this game by pressing h.
You have INFINITE lives, so the game should be pretty easy. Stammer: http://scratch.mit.edu/projects/16460347/ Stammer 2: http://scratch.mit.edu/projects/16546896/ Stammer 3: http://scratch.mit.edu/projects/18663789/ P.S. At the starting screen, you can start the game by having one of the cubes stand on the button and pressing F. Good for single, or multi-player.