In late August 1993, a young programmer named Dave Taylor walked into an office block on the Lyndon B Johnson freeway in Mesquite, Texas, to start a new job. The building had a jet black glass exterior and sat utterly incongruent amid acres of car parks, single-storey industrial units and strip malls. Game designer Sandy Petersen called it the Devil’s Rubik’s Cube. Taylor’s new workplace was on the sixth floor in office 615. The carpets, he discovered, were stained with spilled soda, the ceiling tiles yellowed by water leaks from above. But it was here that a team of five...