[3] In 1989, Carr joined Bullfrog Productions,[4] where he worked as lead artist on Powermonger and Populous II.
[6] Palace were losing money due to an increase in its films' costs, and a colleague showed him screenshots of Populous, which Carr thought "amazing".
[4] Peter Molyneux, managing director of Bullfrog and producer of the game,[8] wanted colourful graphics to appeal to a Japanese market, but Carr thought he had "lost the plot".
[11][7][9] Carr left Bullfrog again in 1998 to join Mucky Foot Productions,[12] who considered him "one of the most talented and experienced artists in the computer games industry".
[13] Carr stated that Mucky Foot's Startopia is his favourite game that he had worked on, due to its humour and simulation.
[3] At a press event in Barcelona, Molyneux asked Carr to demonstrate the production of a sequel using the game's script-writing function, a feature which did not exist.
[6] Describing the event, he said Molyneux "threw me under the bus", and also said that there was a piece that said Carr did not know how to play the game.
[6] Carr was afterwards assigned to Project Milo, and Microsoft approached Lionhead seeking to use its camera technology.
[15] A Microsoft spokesperson thanked Carr for his contributions and described him as "a great friend and colleague".
[20] In 2011, Molyneux felt Carr deserved a Lifetime Achievement honour from the Game Developers Choice Awards.