The Legend of Doom is a total conversion of id Software's classic Doom, created by DeTwelve, looking to recreate the original NES classic in its entirety within the Doom engine. So just how close does it get and what's changed in the transition from NES 2D to PC 3D? John Linneman and Marc 'Try4ce' Duddleson team up to play the two side-by-side.