Founded in 1982 by Tim and Chris Stamper, Ultimate Play the Game were an influential British computer game developer most famous for the Filmation engine adventure games for the ZX Spectrum. By selling hundreds of thousands of computer games on 8 bit micros in 1983-84, Ultimate Play the Game also became one of the most successful early computer-game developers.Ultimate Play the Game is the trading name for the developer, Ashby Computers & Graphics Ltd. Led by the Stamper Brothers, Ultimate developed for the 16 kbyte ZX Spectrum before evolving to the 48 kbyte variant.Ultimate’s most famous series is the Sabreman Series.Image-masking was employed to separate foreground objects from background ones, thereby creating a “walk-mesh” and granting depth illusion.In addition, some objects were interactable. Moreover, verticality was employed.Suffice it to say that Ultimate’s adventure games were some of the most sophisticated computer games of the early 80s. In fact, I have played 1990s computer games that are not as sophisticated as Ultimate’s adventure games.