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Harris' customized Doom game was programmed so that the shooter who runs out of ammunition dies first. Inside Columbine, that was never an issue. But maybe one of them ran out of fantasy first. "I think Dylan would have snapped out of it, while Eric was still in the moment," says Brown. "Maybe that's when they get into their own gunfight." Rumors are swirling among the students that the end did not come with a double suicide. "I keep hearing that Eric's bullets were found in Dylan's body," says Terra Oglesbee. Another version has Harris and Klebold counting to three, then executing each other; some law-enforcement sources say it could even be true. Though ballistics results have not been released, District Attorney Dave Thomas told TIME that the forensics suggest double suicide. But given the location of one wound and the fact that the bullet that passed through Klebold's head has not been recovered, he doesn't dismiss the possibility of a murder-suicide. Says Thomas: "We may never know." Game Over.
--With reporting by John Cloud, S.C. Gwynne, Maureen Harrington and Jeffrey Shapiro/Littleton; Elaine Rivera/Plattsburgh; and Richard Woodbury/Denver