The status of the charge is displayed on a small monitor, which also displays the ammo count and dispenses the game HUD, just like newcomer Machine Gun, the Chaingun and Plasma Gun.
The newer version also follows a charge-based system holding down the trigger causes the weapon to charge up for a more powerful shot (up to 4 levels of charge). The BFG in Doom 3 mostly functions in a different way from its Doom counterpart, as the projectile exists in the form of a computer chip contained within a ball of relatively slow-moving green plasma.
