Doom 3′s source code has been helping make pioneering advances in the science of monster closets since late last year. You’d think, then, that letting players tinker around in the upcoming BFG Edition’s infinitely-shotgunable innards would be as simple as one, two, flashlight-removal-mod-because-you’re-too-hardcore-for-seeing. Unfortunately, however, that’s definitely not the case. Right now, in fact, even John Carmack’s stumped. See, BFG may look like Doom 3 and sound like Doom 3 and – I verified this during QuakeCon while no one was looking – taste like Doom 3, but its ones and zeroes definitely aren’t the same.