With practice, the flashlight can be used to attack zombies to conserve ammo. Wraiths and cacodemons can also be defeated without taking damage if the player is careful, but attacking enemies other than that is not recommended. It has slightly shorter range than the fists when used in this way and has a lower "rate of fire" (i.e. a longer duration between each strike), but is about twice as powerful per hit. A useful tactic with the flashlight is to awaken dormant zombies, i.e. zombies which are laying on the ground where they might easily be mistaken for corpses. If it is a dormant zombie, it can be alerted to your presence by shining the flashlight at it from a distance, and can then be dealt with safely (it may require a moment of "wiggling" the flashlight beam to get the zombie's attention). In deathmatch, using the flashlight alerts other people to your whereabouts. The weapon is not included in the Xbox version's deathmatches.
When the player activates the Artifact's Berserk power in Resurrection of Evil, or collects the berserker powerup in Comm Transfer, the player receives a large boost to the damage output of their melee attacks which applies to the flashlight as well, to the point where a single swing can kill a Hell knight, mancubus or bruiser. It is not really any better or worse than the fists in this case, but it does at least continue to provide light while the player is berserk.
The default key for the flashlight is F on PC, or the white button for Xbox. In multiplayer games it is possible to toggle the flashlight on and off by pressing the reload key (R by default).
In Doom 3: BFG Edition, the flashlight is no longer a selectable weapon. Instead, the "armor-mounted" flashlight is available and can be used at the same time as any weapon. To compensate somewhat, the flashlight has a limited charge meter which runs down as long as it is turned on, and only recharges when it is turned off. Somewhat humorously, the armor mounted flashlight's world model can be seen to have been literally crammed into the player model without any modification, as its handle can be seen crudely protruding from his back when he views himself in mirrors or through security cameras. Some zombies still carry flashlights, and additionally a flashlight can be found in Delta Complex: Union Aerospace Research Division after returning from Hell, but none of them can be collected.
|Rate of fire (RPS)||1|
|First seen in||Mars City Underground|
- The marine's inability to attach his flashlight to a weapon in the game, commonly known as "There's no duct-tape on Mars" problem, is often a subject of parody. This led to creation of the Duct Tape mod and its various successors. The aforementioned BFG Edition of Doom 3 and its later releases incorporated the armor-mounted flashlight by default.