Mariofan0's hack addresses specific bugs in the original Sonic the Hedgehog, particularly focusing on spindash and spike interactions. This improves the gameplay experience by removing glitches and inconsistencies. The modification focuses purely on fixing bugs without adding or altering game content, making it a purely technical enhancement for improved gameplay flow.

Sonic the Hedgehog (USA, Europe) [Hack by Mariofan0 v1.0] (Spindash+Spike Bug Fix)

Sonic the Hedgehog (USA, Europe) [Hack by Hivebrain v0.20] (~Sonic the Hedgehog Plus)