The 2004-era Doom 3 with enhanced graphics, a checkpoint save system, 3D Capability for 3D Televisions and Achievements/Trophies (Xbox 360, Steam, and PS3).
Unlike the original game which featured the Flashlight as a 'weapon' itself, the BFG Edition instead was 'armor-mounted' meaning players can attack and illuminate dark areas simultaneously.
It was released inside Doom 3: BFG Edition.