Berlin no Kabe, aka The Berlin Wall, is a forgotten Japanese exclusive Game Gear game that has a pretty fun 2-player co-op mode when using the Gear-to-Gear link cable.
Berlin no Kabe/Berlin Wall (Game Gear, 1991) 2-player mode, Enable The Link Cable
Berlin no Kabe, aka The Berlin Wall, is a forgotten Japanese exclusive Game Gear game that has a pretty fun 2-player co-op mode when using the Gear-to-Gear link cable.