Sonic Mayhem is the professional name used by game music producer and professional sound designer Sascha Dikiciyan and associates. Sonic Mayhem has, as its most high-profile projects, produced the soundtracks for Quake II, Tomorrow Never Dies and Hellgate: London, as well as approximately half of the soundtrack for Quake III Arena and all the weapon sound effects for Unreal Tournament and, since the build 222 patch, also its predecessor, Unreal.