Fortunately, I knew how to harness my abilities to do that, and kept my mind busy trying to accommodate Big Al’s request. The plan—I dubbed it “the death schedule”—was to work from 10 a.m. to 2 a.m. We realized the quickest solution was for us to repurpose previous work. In 1988, I’d made an Apple II game that UpTime had published called Dangerous Dave in the Deserted Pirate’s Hideout! And I decided to rewrite it for the PC. Meanwhile, Carmack decided to rewrite his Apple II game Catacomb.

