Eggman's on the run with the Master Emerald! Defeat his Doomsday Robot! ---Instructions--- Arrow keys to control Super Sonic. Space to turn on Experimental Mode(unfinished) Don't run out or rings, or you will lose.
Added 2nd phase of boss, (incomplete) (has bugs and glitches) credits to @greensonic35 New version hold space before pressing green flag for 999 rings old version hold space before pressing green flag for 999 rings then press space again to confirm the change press space after second phase for the fight to begin or the boss will ignore your attacks.