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 October 2012 it was ported to Xbox Live Arcade and PlayStation Network with a version released on Steam in November the same year. The only other Dreamcast "Sonic" game was "Sonic Shuffle", which was released in 2000 and featured cel-shaded graphics and a board game concept similar to that of the "Mario Party" series. Dreamcast sales began to decline after the launch of the PlayStation 2, and therefore few "Sonic" games were released for the system. "Sonic the Hedgehog Pocket Adventure" was also released on SNK's Neo Geo Pocket Color portable console, made in the same style of the Genesis/Mega