arrow keys to move, z to jump. press down while running to roll. press z while crouching to spindash. run into the bouncers to bounce :P Space key to Green Hill Act 1! 1 to circles
Credit to piggeh and MrLog, those guys are awesome (and of course, credits to SEGA) Added in a special debug mode! It's a secret though, so good luck figuring it out!
