Play Koala Brothers - Outback Adventures emulator game online in the highest quality available. Koala Brothers - Outback Adventures is a Gameboy Advance game that you can enjoy on Play Emulator. This GBA game is the US English version that works in all modern web browsers without downloading. Koala Brothers - Outback Adventures is part of the Arcade Games and Adventure Games you can play here. PlayEmulator has many online retro games available including related games like Snow Brothers, Dyna Brothers 2, and Little Ninja Brothers.