Left, right, and up arrow keys to move. And wait for the game to start. The "Stomp" attack will be useful in the full version. To stomp, press down while in midair. I do not plan to make a full version.
(Old Edits) December 9, 2015: Game Cancelled (For Now...) This time I used a different platforming script, so sonic can't go through walls anymore. This was a PAIN to make! >_< Sonic still floats ;-;