Sonic the Hedgehog 2 — StrategyWiki

For the Sega Master System and Sega Game Gear game, see Sonic the Hedgehog 2 (8-bit). Sonic the Hedgehog 2 is a platform game developed by Sonic Team in collaboration

Sonic the Hedgehog/Green Hill — StrategyWiki

Sonic Mega Collection Plus (2004) - MobyGames

Sonic Adventure 2 — StrategyWiki

Sonic Superstars - Wikidata

Sonic 2 - Chemical Plant 2 speed run (0:39)

Sonic CD/Walkthrough — StrategyWiki

Sonic Mania — StrategyWiki Strategy guide and game reference wiki

Sonic the Hedgehog 2 (2013), Sonic Wiki Zone

Chemical Plant by RagingB1YZ4D on DeviantArt

Sonic Colors — StrategyWiki Strategy guide and game reference wiki