Sonic the Hedgehog 2 (8-bit), Sonic Wiki Zone

Sonic the Hedgehog 2 (ソニック・ザ・ヘッジホッグ２, Sonikku za Hejjihoggu Tsū?) is a 2D platforming game in the Sonic the Hedgehog series developed by Aspect and released by Sega. The game was first released on 16 October 1992 for Sega Master System and later ported to the Game Gear between 29 October 1992 and late November 1992, the former being exclusive to PAL countries. Predating its 16-bit counterpart for the Sega Mega Drive/Genesis by less than a month, the game marks the debut of Miles "Tails" Prower

What if green hills zone( 8-bit sonic 2) and the location from the sonic cd opening are the same place? : r/SonicTheHedgehog

Sonic Mania, Sonic Wiki Zone

Sonic the Hedgehog: Triple Trouble - Wikipedia

Sonic the Hedgehog 2 (16-Bit) - Mainline Sonic Games - Sonic Stadium

Emerald Hill Zone, Sonic Wiki Zone

Sonic the Hedgehog 2, Sonic Wiki Zone

Special Stage (Sonic the Hedgehog) (8-bit), Sonic Wiki Zone

Oil Ocean Zone, Sonic Wiki Zone

Sonic the Hedgehog 2: The Official Movie Pre-Quill, Sonic Wiki Zone

Sonic the Hedgehog (8-bit video game) - Wikipedia