[3] Additionally, on weekends, they were allowed to use the Commodore PET computer owned by their father, James, to create a text version of Dungeons & Dragons.

[3] An advertisement placed in the magazine Popular Computing Weekly caught the attention of Mastertronic, a British software publisher, and the two brothers quit their education to pursue development of budget-priced games for the company.

[3] They initially worked out of the Beaumont Business Centre in Banbury, where their elder sister Abigail managed the front desk.

[3] Products developed using this strategy include G-Man and Danger Zone by Mike Clark, Terra Cognita by Stephen Curtis, Super Robin Hood and Ghost Hunters by the Oliver Twins, Super Stuntman by Peter Williamson, Lazer Force by Gavin Raeburn, and ATV Simulator by Timothy R.

Both franchises featured the J-Cart, allowing two extra controllers to be attached to the game cart without requiring Electronic Arts' 4 way play or SEGA's four-player adaptor.

[10][11] In an effort to establish themselves in the United States, they announced that they would launch a new development studio in Oakhurst, using offices that were abandoned by Sierra On-Line and hiring much of Yosemite Entertainment's laid off staff in mid-September 1999.

They owned the rights to use the title Operation Flashpoint: Dragon Rising (2011), but have parted with the original developer Bohemia Interactive Studio.

Following the death of Colin McRae on 15 September 2007, Codemasters released a public statement expressing their sorrow and support for the family.

[15][16][17] In March 2008, Codemasters announced a new partnership with Majesco Entertainment which would focus on titles for DS and Wii, including Nanostray 2, Toy Shop, Cake Mania 2 and Nancy Drew: The Mystery of the Clue Bender Society for DS, and Wild Earth: African Safari, Our House and Cake Mania for Wii.

The studio's only release had been Sega Rally Revo, which was greeted with fairly positive reviews but poor sales figures.

[22] In the 2008 Queen's Birthday Honours, the Darlings were appointed Commanders of the Order of the British Empire (CBE) for services to the video game industry.

[28] In April 2016, Codemasters announced that they had hired most of the staff of racing game developer Evolution Studios after Sony closed the company.

[30] Codemasters held an initial public offering to list the company on the London Stock Exchange's Alternative Investment Market on 1 June 2018.

[31][32] Through placings in June and November 2019, Codemasters welcomed new institutional shareholders to the register whilst providing Reliance with a highly satisfactory exit and thus ending their nine-year relationship with them.

[1] The studio acquired the exclusive license to the World Rally Championship series in June 2020 which will begin as a five-year deal in 2023, with plans to release their first game in 2024.

[43] Codemasters announced in July 2021 that CEO Frank Sagnier and CFO Rashid Varachia will depart the company at the end of the month, as part of the EA acquisition plan.

Special vice president of product development Clive Moody and of publishing Jonathan Bunney will take over leadership of Codemasters following this.

[44] In May 2022, EA merged Codemasters subsidiary Codemasters Cheshire into Criterion Games, an existing subsidiary of EA, as to support effort on the Need for Speed series as the two companies were already working together on a new title in the series together for months, then later that year in October, announcing a new title called Need for Speed Unbound,[45] which was released on 2 December 2022.