DOOM 3

Set on Mars in 2145, the story follows a newly arrived Marine assigned to a Union Aerospace Corporation research base. Routine security work is interrupted by an experiment that opens a gateway, unleashing creatures and turning personnel into zombies. With communications failing and sections of the complex locked down, the Marine is tasked with restoring systems, locating survivors, and tracing the source of the outbreak deeper into the facility and beyond.

DOOM 3 is a single-player and multiplayer horror first-person shooter game. The campaign emphasizes close-quarters tension and methodical movement. Combat mixes firearm aim with careful use of light and shadow, since many areas are unlit and enemy ambushes are common. The Marine carries conventional weapons such as the pistol, shotgun, machine gun, chaingun, and grenades, along with more advanced tools like the plasma gun, rocket launcher, and the experimental BFG.