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By October 1986, the Darling brothers, with help by their father, had founded Codemasters. In 1985, the two owned a 50% stake in Mastertronic, which they proceeded to sell in March 1986 when they decided to become independent. The Darling brothers found success in making these games, gaining GB£200,000 by the time they were 16 and 17, respectively. They also developed The Games Creator, a game making tool that would later be sold commercially. These games included Space Walk, BMX Racers, Jungle Story, Orbitron, Sub Hunt, Pigs in Space. 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.
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The Darling brothers later returned to England, where they acquired their own VIC-20 and founded Galactic Software, again with the help of Heibert. Later on, the two brothers and school friend Michael Heibert, whose family possessed a VIC-20 computer, founded Darbert Computers and created video game clones of popular games, such as Galaxian and Defender.
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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. While attending school in Vancouver, Richard Darling and his elder brother, David Darling, had learned programming with punch cards and had access to the school's computer room outside of hours through one of the school's janitors.
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