Sega Game Gear, Sonic Wiki Zone

The Sega Game Gear (ゲームギア, Gēmu Gia?) is a handheld video game console manufactured by Sega. It competed with Nintendo's Game Boy. Introduced in 1990 as a portable Sega Master System, it was in production from 1990 to 1997. The game Columns came bundled in with the Game Gear, with only six games released along side the initial launch. There were twelve Sonic games released for the system that have been ported to later games released by Sega, such as Sonic Adventure DX: Director's Cut, Sonic Gems

Prerelease:Sonic the Hedgehog 2 (Genesis)/Scrapped Zones - The

Sonic Gems Collection - Wikipedia

Sonic the Hedgehog Triple Trouble, Sonic Wiki Zone

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

Sonic Labyrinth - Wikipedia

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

Sky Base Zone - Sonic Retro

Sonic Chaos - Wikipedia

List of Game Gear games - Wikipedia

Sonic's Ultimate Genesis Collection - Wikipedia

Sonic Classic Collection, Sonic Wiki Zone

Sonic the Hedgehog 2 (8-bit video game) - Wikipedia

Sonic the Hedgehog 2 (8-bit)

Sonic Origins Plus, Sonic Wiki Zone