Pro Boxing Simulator Amstrad CPC

Fight to become WORLD CHAMPION! All the moves... Punches, Body Blows, Upper Cuts, Knockouts, Even Fouls like Groin Punches, Kicks, and Head Butts! — Cassette cover

By Fair Means or Foul (later also released as Pro Boxing Simulator)  is a boxing video game first published for a range of 8-bit home computers in 1988 by Superior Software. It was later reissued with the new title by Codemasters who also published conversions for 16-bit computers. The game offers a variety of boxing moves including fouls. The game received mixed reviews.

The game was originally developed by Michael and Terry Simpson for the BBC Micro and Acorn Electron. The game was converted to Commodore 64, Amstrad CPC and ZX Spectrum and launched simultaneously by Superior Software in 1988. The BBC and Electron versions were released under the joint Superior/Acornsoft name while the other versions were released under the Superior/Alligata name. All versions were released on cassette  with all versions except the Electron also released on floppy disk.

The game was then released as a budget title by Codemasters in 1990 under the new title Pro Boxing Simulator (to fit with their long-running series). Controversially, this version had "New Release" on the cassette cover which lead to complaints when people bought the game not realising it was the same as By Fair Means or Foul. Codemasters then reissued the game with the "New Release" box changed to "Previously known as 'Fair Means or Foul'" and offered to refund anyone who had bought both versions of the game.

Codemasters also converted the game to Amiga and Atari ST and these versions were released in 1991.

Source:Wikipedia