Sonic 2 Time Adventure is a platforming ROM hack for the Sega Genesis, developed by HenryD3bby and Team Chaos. Released in 2024, this project aims to complete the intended Sonic the Hedgehog 2 experience by restoring levels and features from the famous Simon Wai prototype, bringing forgotten content to life while remaining loyal to the original vision.
How to Play
Race through the reconstructed prototype zones, collecting rings and defeating badniks along the way. The game uses standard Sega Genesis controls in your browser: move with the arrow keys, and jump or perform a spin dash using the Z, X, or C keys. Press Enter to start.
Tips
- Keep an eye out for layout changes and obstacles that were not present in the final release of Sonic 2.
- Since this game is based on early prototype builds, some level designs can be more challenging or unconventional, so proceed with caution.
Source: Sonic Stuff Research Group

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