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Sonic Spinball prototype 0413 for the Game Gear was released by drx during the February 23rd, 2008 proto release.
- Rolling Sonic finally makes his appearance on the Sega Logo, but he inverts the color of the logo.
- 1994 Sega copyright appears on the Title Screen.
- Levels can be skipped by pressing or while the game is paused. You can also press to move Sonic anywhere.
- The continue screen when you run out of lives is the same as final.