Sonic Chaos (Master System prototype; 1993-06-30) - Sonic Retro

Sonic Chaos (Jun 30, 1993 prototype) - Hidden Palace

US20120017232A1 - Adaptive pattern recognition based controller apparatus and method and human-factored interface thereore - Google Patents

Sonic Chaos (Master System prototype; 1993-06-30) - Sonic Retro

Sonic Chaos (Jun 30, 1993 prototype) - Hidden Palace

Sonic Chaos/Development - Sonic Retro

US20120017232A1 - Adaptive pattern recognition based controller apparatus and method and human-factored interface thereore - Google Patents

US20150204559A1 - Adaptive pattern recognition based controller apparatus and method and human-interface therefore - Google Patents

Hardware-Target-Game-Database/EverDrive Pack SMDBs/Master EverDrive SMDB.txt at master · frederic-mahe/Hardware-Target-Game-Database · GitHub

Sonic Chaos (May 17, 1993 prototype)

Sonic Chaos (Jun 30, 1993 prototype) - Hidden Palace

Game Gear - Sonic Chaos - Sonic (May 17, 1993 prototype) - The Spriters Resource

Sonic Chaos/Development - Sonic Retro