 Rippled foreground. In the final, only the BG is rippled |
 This thing is higher then in the final, you can fall back to it cause of this |
 these things are moving upwards constantly. In the final, only one is there, and it only moves if you stand on it. |
Every zone in 510 features a different enemy flower. In the final, every zone had the same flower.
Other notes
- Sonic can hold his air for about 5 minutes underwater.
- The Present zone has a different palette.