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The inhabitants of South Island are in danger! Dr. Robotnik has stolen all the Chaos Emeralds which kept the power balance. Robotnik has thrown the Emeralds in a parallel universe and is keeping the red one. Sonic and Tails must retreive all the Chaos Emeralds before the destruction of South Island. This is the first Game Gear game where you can play either Sonic or Tails.


Sonic the Hedgehog Chaos Game Gear Sonic Chaos Ingame
Sonic the Hedgehog Chaos SEGA Master System Player Select
Sonic the Hedgehog Chaos SEGA Master System Bouncing around
Sonic the Hedgehog Chaos Game Gear Sonic Chaos Ingame

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Alternate Titles

  • "Sonic & Tails" -- Japanese title
  • "Sonic Chaos" -- Common title
  • "ソニック&テイルス" -- Japanese spelling

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User Reviews

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Critic Reviews

Power Sonic SEGA Master System Jan 10, 2014 9.25 out of 10 92
Sega Force SEGA Master System Nov 04, 1993 92 out of 100 92
Defunct Games Game Gear Apr 16, 2006 87 out of 100 87 SEGA Master System Dec 04, 2001 8.6 out of 10 86
Game Players Game Gear Nov, 1993 84 out of 100 84
The Video Game Critic Game Gear Oct 08, 2003 B+ 83
Electronic Gaming Monthly (EGM) Game Gear Jan, 1994 8.25 out of 10 82
Megablast SEGA Master System Dec, 1993 74 out of 100 74
Mega Fun Game Gear Nov, 1993 71 out of 100 71
ASM (Aktueller Software Markt) SEGA Master System Jan, 1994 8 out of 12 67


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In the US version of the game, the Gigalopolis Zone was changed to the Gigapolis Zone. This could be due to the fact that dimmer children might read the name as "Gigolopolis." It's odd that the same people who'd be so anal about such a comparatively innocent association could also be the same louts who allowed Phantasy Star III's villain to be translated as "Dark Phallus."
Contributed to by Junryeong (32) and gamewarrior (5060)