- Company founded by David Darling (Chairman and CEO), Richard Darling (Creative Director) and their father Jim Darling (Director).
- The company develops a cheating device for the NES called Power Pak, later renamed Game Genie.
- Became embroiled in a legal battle with Sega and Nintendo, regarding their insistence on not following their required minimum retail price for games.
- Company recognized by Edge Magazine as Publisher of the Year Award.
Sep 03, 2004:
- The company ceases development on Dragon Empires, a massively multiplayer online role playing project, due to technical issues.
Apr 04, 2005:
- The company secures a significant investment from Benchmark Capital Europe, which will be used to accelerate new game development.
May 09, 2005:
- The company appoints a new CEO, Rod Cousens and a new COO, Tony Williams. Chairman David Darling becomes the Chief Creative Officer. The company also announces to focus on branded games, enter the mobile market, develop massive multiplayer online (MMO) products and confirm its position as a prominent international publisher.
Jul 01, 2005:
- After announcing an interest in the online gaming market a few months ago, Codemasters Online Gaming is formed, a new division that will focus on Massively Multiplayer Online. David Solari has been appointed as Director.
Aug 31, 2005:
- The company forms Codemasters Mobile, to expand the company's presence in the mobile phone gaming market. Matt Davies has been appointed Director of the new division.
Aug 10, 2007:
- The company opens a third development studio, now in Guildford, UK, headed by Adrian Bolton.
Nov 14, 2008: