Sonic the Hedgehog and Knuckles the Echidna, once enemies, now allies. Teamed together to stop that evil scientist, Dr. Ivo Robotnik, from taking control of the world with his crazed hover crafts and mad robots.




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The Death Egg, Dr. Ivo Robotnik's space station, has once again crashed on Angel Island after the events of Sonic the Hedgehog 3. Robotnik needs power the Chaos Emeralds to power it up again, and because of this, Sonic and Tails have to find the Chaos Emeralds before him so they can stop his plans of world domination. However, Knuckles, the guardian of Angel Island and the Master Emerald, was tricked by Robotnik into thinking that Sonic and Tails are after the Master Emerald, so he is equally determined to stop the duo. But while all 3 are going round with each other, who's gonna stop Robotnik? Written by

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E | See all certifications »




Release Date:

18 October 1994 (USA)  »

Also Known As:

Sonic 3 & Knuckles  »

Company Credits

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Technical Specs


Aspect Ratio:

1.33 : 1
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Did You Know?


Masato Nakamura, who composed the music for the first two games, Sonic the Hedgehog (1991) and Sonic the Hedgehog 2 (1992) was invited to return to compose but Nakamura demanded a higher salary as well as greater compensation fees for any music that would be reused in future titles. Not wanting to pay what he was requesting, Sega decided to turn elsewhere for the music. See more »


In Sandopolis Act 1, after the boss is defeated, for some reason, the boss music continues to play. See more »


Follows Sonic the Hedgehog (1991) See more »

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User Reviews

A 4th Adventure for Sonic
30 August 2003 | by (england) – See all my reviews

Sonic is back for the 4th time, but this time he's on a team with Knuckles. The 4th adventure takes you on an excitement adventure, the same speed skills and more new adventure's levels filed with loops and new creatures. Sonic and Knuckles battle their way to get back the Chaos emraids for the 4th time. can they get them or will Dr Robotnik have them to himself forever. We'll have to find out as we can play the 4th adventure game.

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