Headquarters: Manchester, UK
Tiertex Design Studios, formerly Tiertex Ltd. are a video game development and publishing company founded in 1987 in the United Kingdom. It was founded by Donald Campbell and John Prince. They are notable for porting numerous games to the Sega Master System, Sega Game Gear and Sega Mega Drive for publishers such as U.S. Gold, Electronic Arts and Domark. In a similar fashion to Tose Software, the company was highly secretive about game credits and refused to put them in many of their games.
- note: home computer entries incomplete
- Thunder Blade (?? - disc version only? does it even have the game?)