The Algorithm Guild

The Big Red Software Company Ltd.

This English company was started as The Big Red Software Company by Paul Ranson in 1989. They primarily developed conversions, budget games and licensed titles, working closely with Codemasters in their early years. Later their eponymous racing game was successful. In 1995 Big Red Software was acquired by Eidos and became part of the new Eidos Interactive. The division was renamed Corrosive Software in about 1997 and was a development unit of Eidos. The division completed the game Assault Corps but it was never released. Eidos closed down Corrosive Software in 1998.

The Bruce Artwick Organization Ltd.

The Bruce Artwick Organization Ltd. (most commonly known as BAO Ltd.) was founded by Bruce Artwick and develops upgrades and scenery add-ons for flight simulators, most notably Microsoft Flight Simulator.

The Codemasters Software Company Limited

The old and famous British software company was founded in 1986 by Richard Darling, David Darling and Jim Darling. They became famous for the Dizzy or Micromachines series.

The Creative Assembly Ltd.

The Creative Assembly is a game development studio based in Sussex (UK). It was established on 18th August 1987 by Tim Ansell. In July 2002 the Australian division The Creative Assembly International Limited was opened. On 9th March 2005 the SEGA Sammy group announced the acquisition of The Creative Assembly, also acquiring the Australian division. In December 2010 the latter was renamed SEGA Studios Australia.

The Dennis Courtney Five

The Kremlin

The Kremlin was an internal graphics and development team of Domark Software Ltd.

The Leland Corporation

Originally Cinematronics Inc. Games under the Leland Corporation name were released from 1987 until 1992.

The Portland IBM Personal Computer Club

The SoftAd Group, Inc.

The Software Shed

The Toxic Dream

Theron Wierenga

Thinking Machine Associates

Thinking Tools, Inc.

Thomas Buengener, David Lehmeyer

Thorsoft of Letchworth

Three-Sixty Pacific, Inc.

Three-Sixty Pacific was founded in late 1980's by avid wargamers and military history enthusiasts. Their games, although by no means selling like hot cakes, were always thoughtfully designed, with a high level of realism rarely seen in wargames, user-friendly mouse-driven interface, clean graphics, and excellent tutorial and on-line help files. While fellow wargaming houses such as QQP and SSI diversifies into non-historical and hypothetical wargames, Three-Sixty stuck to their first love: historical wargames, for all in-house efforts. After some diversification efforts in the late 80's - early 90's when the company published several action games, Three-Sixty developed and published Harpoon - a masterpiece based on Larry Bond's tabletop wargame that was inducted into Computer Gaming 150 Best Games of All Time and is still regarded today as THE best naval simulation ever produced. Despite the considerable commercial success of Harpoon and Atomic Games' V for Victory Series, complete failure of lavishly-produced but esoteric Theatre of War and lack of funds brought the company to its knees in early 1994.

Tiertex Design Studios

Tiertex Design Studios was established in 1987 in the United Kingdom as Tiertex Limited (sometimes abbreviated Tiertex Ltd). The company has developed hundreds of games for just about every video console and home computer format ever produced. In addition, the company offers in-house production services to publishers including games design, programming, graphics, music, SFX, development tools, and testing. The company's clientele includes household name publishers such as EA, THQ, Activision, LEGO Media and BBC Worldwide for whom they have developed a diverse range of titles from sports sims, such as Championship Motocross 2001, to games for younger children, such as the EMMA 2000 award nominee Bob The Builder. The company began using the name Tiertex Design Studios Limited in February 2004.

Tiger Electronics, Ltd

Tim Wisseman

Titanic Entertainment

Titus Ltd.

TLK Games S.A.R.L.

TLK Games was founded in 1990. Though there is a Paris office, TLK is based primarily in Albi on the River Tarn in the south-west of France, around 85 km northeast of Toulouse. The company develops and markets its own games and currently, 2011, has built up a catalog of over 300 games to date (the majority in 3D). Their games are marketed using the Shareware model and are sold directly on the internet.

Tom Bombadil's Software Emporium and House of Curi

Tom Proudfoot Games

Tom Proudfoot Games is the moniker under which the Californian Tom Proudfoot releases his games.