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Collision Chaos

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Sonic the Hedgehog CD
Collision Chaos

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Collision Chaos
Sonic in the present timeline of Collision Chaos.
Appearances and Overview
First appearance

Sonic the Hedgehog CD
(First and only appearance)


Little Planet

Stage theme(s)
Previous stage

Palmtree Panic

Next stage

Tidal Tempest

Playable characters
(story mode)
Level number


Number of acts


Boss fight

Collision Chaos boss

Collision Chaos is the second round from the game Sonic the Hedgehog CD. It is the second level of Sonic CD, which was proceeded by Palmtree Panic and is followed by Tidal Tempest. The boss of the third zone is a giant pinball machine operated by Dr. Robotnik. This stage is where Amy Rose is captured by Metal Sonic, occurring right at the beginning of the stage.


Present and Past

It is an unusual, possibly psychedelic mechanized forest with a well-established casino. Neon signs line up across the casino, which seem to be stylized Japanese writing but may actually be gibberish. A lake is shown at the very bottom of the zone. In the past, many of the casino features are not present due to it still being in construction. The stage has a rather strange orange tint to the forest, as well. No signs depict the completion of the casino here; instead, airborne rocky structures replace them. The lake is also present in the past timeline.

Bad Future

The bad future features a darkened sky adorned with red clouds, and seems to be haunted with gray machines. This timeline is one of the few to remain functional and colorful while showing a dark future for any passerby at the same time. There seem to be no plants present here, and the signs are still illiterate but fully functional. The lake here looks to be teeming with radioactive waste, as evidenced by its reddish-orange tint.

Good Future

The good future shows a futuristic, blue colored, inviting casino with a bright pink sky. Plants are futuristic and natural adding pleasing attractions to the "casinotopia", while the waters below are crisp and clean.


  • When accesing the game files, Collision Chaos is listed as R3 after Palmtree Panic which is listed as R1 suggesting that a round got scrapped during development.
  • In an early prototype, Metal Sonic was supposed to be able to damage the player in the beginning of Act 1, which is why there is a hidden shield at the start of the level.
  • The EU/JP version of the Bad Future theme appears in Sonic Chronicles: The Dark Brotherhood for Angel Island.
  • This stage is very similar to Casino Night Zone from Sonic the Hedgehog 2. Coincidentially, both games were in development around the same time frame.



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