Invariant is a survival horror FPS set inside a remote research facility in Antarctica, inspired by games like F.E.A.R., Half-Life, Resident Evil, and John Carpenter's The Thing, created in the spirit of the 90s and 2000s shooters and survival horror games. After a catastrophic incident cuts the station off from the outside world, you must fight to survive against hostile creatures, collapsing systems, and the growing paranoia consuming the facility.Combining atmospheric survival horror with intense first-person combat and logical puzzles, Invariant blends exploration, resource management, environmental storytelling, and tense firefights into an increasingly desperate fight for survival. Every bullet matters, supplies are limited, and the facility itself feels increasingly hostile as you uncover the truth behind the disaster.Explore abandoned laboratories, frozen maintenance sectors, and experimental research zones hidden deep beneath the Antarctic ice. Search for weapons, tools, medical supplies, and clues while surviving encounters with creatures and entities that have transformed the station into a nightmare.Key FeaturesSurvival Horror Roots: Resource management, deliberate pacing, and logical puzzles.Intense, Grounded Combat: High-stakes FPS encounters where every bullet counts.Atmospheric Isolation: A claustrophobic Antarctic facility shaped by paranoia, dread, and environmental storytelling.