Proto:Sonic the Hedgehog CD (Sega CD)/v0.28A
This is a sub-page of Proto:Sonic the Hedgehog CD (Sega CD).
This prototype is documented on Hidden Palace.
While compiled just two days after the widely-known 510 prototype, this build still contains noticeable differences in comparison. This is also the first time a proper dump has been made of a prototype from around the same time period.
- The Special Stage data is the only game-related file unchanged from the 510 build.
- The Past music doesn't exist at this point, with those areas instead just playing the Present music.
- Special Stage rings no longer appear at the end of every Act.
- The "Comin' Soon" screen appears after completing Tidal Tempest Act 3.