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

List of Game Gear games - Wikipedia

Green Hill Zone (Sonic the Hedgehog), Sonic Wiki Zone

Sega Pico, Sonic Wiki Zone

Sega Game Gear, Sonic Wiki Zone

Sonic the Hedgehog, Sonic Wiki Zone

Sonic Rivals, Sonic Wiki Zone

Sonic 2 in 1, Sonic Wiki Zone

Sonic Labyrinth - Wikipedia

Tails' Skypatrol, Sonic Wiki Zone

Sonic the Hedgehog (TV Play System), Sonic Wiki Zone