Doom 64

In the aftermath of the lone Marine's legendary victories against the forces of Hell, the ravaged research installations of the Union Aerospace Corporation are sealed off under quarantine, left to fester beneath apocalyptic levels of radiation. For years the abandoned facilities lie silent. Then a barely functioning monitoring satellite transmits an ominous message back to Earth: a single mysterious entity, its presence long masked by the deadly radiation, wields vast powers of rejuvenation. This hidden horror has been steadily resurrecting the fallen demons, warping decayed corpses back into corrupted, living flesh and rebuilding an infernal army. With the threat mounting and no one else equal to the task, the battle-hardened Marine, the only experienced survivor of the earlier campaigns against Hell, is sent in alone to hunt down the demons and end the menace once and for all.