This article has a talk page!This is a sub-page of Proto:Sonic the Hedgehog 3/Sonic 3 Zones.
- Both acts use a completely different music track. MIDI renditions of these songs would go on to be used for the same zone in Sonic & Knuckles Collection. Act 1's appears to be unfinished due to unfinished drums and a general lack of polish.
- Sonic begins the stage running down the mountainside. In the final, he snowboards down it.
- The "trap" glitch (in which the game treats the vertical screen wrap position as a bottomless pit under specific circumstances) affects both playable characters at this stage in development. The final version of the game fixed it for Sonic, but Tails would be stuck with it until Sonic the Hedgehog 3 & Knuckles.
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- There are some misplaced ice spikes in Act 2.
- Act 2 doesn't have water.
- Though the tunnel leading to Launch Base Zone is present, the game does not actually send the player there like in the final game.
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