Extraneum (v1.0.8)

A secret research complex becomes a blood-soaked maze when its classified experiment unleashes a wave of alien-looking horrors. Extraneum is a hard-edged retro FPS built around fast movement, chunky firepower, and the constant pressure of fighting through hostile laboratory corridors. You play an overqualified security guard armed with little more than a knife, an SMG, and the determination to survive an overtime shift from hell. Its tone lands somewhere between classic Doom-style aggression and the lonely, oppressive atmosphere of a sci-fi disaster movie.

Combat revolves around clearing rooms, managing ammunition, switching between an expanding arsenal, and learning which weapons best handle each nightmare in your path. The campaign spans 24 levels, with labyrinthine layouts that reward players who check suspicious walls, revisit locked paths, and search every corner for concealed supplies. Hidden health, armor, and ammo upgrades make thorough exploration more than a completionist distraction; finding them can meaningfully improve your odds against tougher encounters. Three distinct boss battles punctuate the journey, while a dozen enemy types keep the shooting from becoming a simple matter of holding down the trigger.

Extraneum stands out by treating exploration as seriously as gunplay, giving its compact old-school levels plenty of secrets and alternate routes to uncover. The focus is not on cinematic spectacle or modern military realism, but on responsive weapons, hostile level design, and the satisfaction of locating a stash that feels genuinely hidden. Its stripped-back presentation should appeal to players who miss the era of key hunts, dangerous corridors, and secret-packed FPS campaigns. Fans of Doom, Quake, DUSK, and other retro-inspired shooters should feel at home, while newcomers need to be ready for a more demanding, less hand-holding style of progression.