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 appearance and attributes. A Flicky is one of the most prominently used animals in Eggman's experiments. This small bird's first appearance in a game predates Sonic. Flicky and its respective game were alluded to in "Sonic 3D Blast". Numerous composers have contributed music to the "Sonic the Hedgehog" series. Masato Nakamura of J-pop band Dreams Come True was responsible for the music of the first two 16-bit games. "Ys"/"Streets of Rage" composer Yuzo Koshiro composed the tunes for the first 8-bit game, except for what was retained from the 16-bit version. Sega's in-house music division, Sega Digital Studios, formerly known