 Development on the game began in early 2006 and the game was announced in May of the same year, with gameplay demonstrated at E3 2006.After over a year and a half of development, its release in 2007 was met with generally favourable reviews, and helped boost overall sales for Codemasters that year.An expansion pack entitled "" was announced on 1 November 2007 and released 15 February 2008 along with additional multiplayer maps and a local split screen co-op mode.