Despite all the subsequent releases, Sonic's original outing remains one of the best. It's the game that first introduced the world to high-speed platforming

7> Sonic the Hedgehog

Sonic Advance succeeds by sticking closely to the formula established in the original Sega Genesis titles. Aside from Sonic, you'll be able to zip through stages as Tails, Knuckles, or Amy--each with their own skills that offer a different play style.

6> Sonic Advance

As the last Sonic game on Sega Dreamcast, Sonic Adventure 2 sent the hedgehog out with a bang. Built to offer faster gameplay than its predecessor,

Originally launched on the obscure Sega CD, Sonic CD eventually went on to get a second chance with ports to PS2 and GameCube--and continues to be available on modern storefronts such as Steam (and soon as part of Sonic Origins).

Developed by a team of fans (and led by Christian Whitehead, who had previously worked with Sega to produce mobile adaptions of classic Sonic titles), Sonic Mania is the ultimate fan-service game.

It's difficult for sequels to live up to the original, but Sega managed to knock it out of the park with Sonic the Hedgehog 2. Developed by a split staff of Japanese and American developers, a load of content

2> Sonic the Hedgehog

Sonic the Hedgehog 3 took the series to new heights. A stunning soundtrack, beautiful new environments, and the ability to control both Sonic and Tails brought players

1> Sonic 3 & Knuckle

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