oui il y a d'autre pack Jap qui sont eux assez rare et cher
( sources
http://www.megaoldies.net/conDetail_59_0_Game%20Gear.html )
Game Gear Pack 4-in-1 (1990)
Game Gear Pack Columns (1990)
Game Gear Pack Roi Lion (1991)
Game Gear Pack Sonic (1991)
Game Gear Pack Sonic + AC Adaptor (1991)
Game Gear Pack Sonic 2 (1992)
Game Gear (06/10/1990)
Game Gear "Magic Knight Rayearth" Limited Edition (1994)
Game Gear Pack Puyo Puyo (1993)
Game Gear Pack Sonic & Tails (1993)
Game Gear Pack Sonic 2 (1992)
Game Gear Pack Sonic Drift (18/03/1994)
Game Gear Smoke Edition (1990)
Game Gear Yellow edition (1990)
Kid's Gear (1990)
Game Gear Blue edition (-)
Game Gear Pack Sonic (1991)
Game Gear Pack Sonic 2 (1992)
et la liste est pas complete