The Chaos Engine is a top-down run and gun computer game developed by the Bitmap Brothers and published by Renegade Software in 1993. It was first released for the Commodore Amiga, with an enhanced version available for AGA Amigas, and later ported to MS-DOS, and the Super Nintendo Entertainment System, Atari ST, Amiga CD32, RISC OS and Sega Mega Drive platforms. USA releases of SNES and Sega versions were retitled Soldiers of Fortune, and the character The Preacher had his clerical collar removed and was renamed The Scientist. A sequel to the game, The Chaos Engine 2, was released in 1996.
Source: Wikipedia, "The Chaos Engine", available under the CC-BY-SA License.