Sonic Chaos ROM Download for Game Gear on Emulator Games. Play Sonic Chaos game that is available in the United States of America (USA) version only on this website. Sonic Chaos is a Game Gear emulator game that you can download to your computer or play online within your browser. You can also download free ROMs such as Sonic The Hedgehog 2, Sonic Blast and Sonic The Hedgehog - Triple Trouble as shown below. Sonic Chaos works on all your devices in high quality.