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Act 1
Act 1 has a completely different background.
Sonic does not have a dedicated underwater palette.
Big Shaker has a broken palette when underwater.
The transition to Act 2 doesn't work, meaning Sonic and Tails get stuck.
Map
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| Prototype
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| Final game
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Act 2
Knuckles runs through a wall to press the switch.
Eggman's Screw Mobile doesn't move downwards to create a vortex. It instead plays how Knuckles fights the boss in Sonic the Hedgehog 3 & Knuckles.
The transition to Marble Garden Zone doesn't activate.
Map
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| Prototype
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| 100%
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| Final game
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References
