Sonic the Hedgehog platforming of the main levels. The 16-bit "Sonic the Hedgehog " consisted of a giant rotating maze, which many considered a major technical achievement. The most common special stages, however, were segments with the character running through a long tunnel to collect certain items. 3D "collect item" levels, as in "Sonic 3" and "Sonic & Knuckles", used the same perspective but had Sonic collecting all the blue-colored orbs on the surface of a giant sphere. Finally, "Sonic Advance 2" employed a 3D ring-collecting stage, and "Sonic Chaos" ("Sonic and Tails" in Japan) used a variety of gimmicks for its levels.
Sonic the Hedgehog of Sonic the Hedgehog" is known for its bright colors and whimsical humor, "Sonic the Hedgehog" featured darker, more dramatic stories which still constitute a departure from the tone of most of the "Sonic" games. This adaptation follows Sonic and his fellow 'Freedom Fighters' who attempt to liberate Mobius from the grip of Robotnik, who plans to robotocise everything. The "Sonic the Hedgehog" comic book series by Archie Comics uses several characters from this series. A two-episode OVA adaptation was released in Japan in 1996. It was released in North America in 1999 under the name "Sonic the Hedgehog: The