None. Just keep pressing the green flag for a random corruption state.
This a ROM corrupted version of Sonic 1. This means that some bits of the ROM were either replaced, added, or removed. Watch the full video here: https://www.youtube.com/watch?v=e2paqWIIKNs (Highest Quality: 720p60 - 60 FPS) Recorded and corrupted by AuroraKnux.
