75%Strong matchZERO PROTOCOL
87%41187% positive reviews, Very Positive across 411 reviews·Survival Horror · Atmospheric
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A slow-burn psychological descent into a Cold War facility hidden in the Australian outback where exposure is the horror, and everything that remains is a consequence.
X300
Steam
This is a grounded survival horror game with a psychological hook.
Search for your missing brother inside a decaying Cold War facility where reality fractures between past and present. Explore abandoned sectors, survive environmental exposure, uncover hidden experiments, and endure a place where systems continue operating long after the people who built them should be gone.
Out here, there is no cover. The desert offers no protection only heat, light, distance, and silence. You are always visible. Always vulnerable. Inside the facility, that exposure changes form.
You are not being chased. You are being watched.
This was a place of control.
Secrecy was law. Obedience was survival. Questioning was not part of the process.
Decades later, the structures remain but the purpose is fractured.
Fragments of routine still play out across empty corridors. Protocols continue without context and something here still gives orders.
Without warning, time gives way. You find yourself in 1956 when the facility was optimistically unquestioned.
You follow instructions. You complete tasks. You don’t resist.
Then you return to the present where everything is decayed, silent… and wrong.
The past shows intent. The present shows consequences.
You are not alone. The outback and whatever remains inside has been shaped by isolation, exposure, and forgotten experiments. Some things still hunt. Others simply observe. Wildlife is no longer predictable. People are no longer stable. What you encounter isn’t designed to frighten you. It exists because something here made it possible.
Exposure Horror The environment itself becomes the threat.
Dual Reality (1956 / Present) Move between the facility’s operational 1956 past and its ruined present.
Institutional Psychological Horror Fear rooted in systems, obedience, and control.
Environmental Threats & Altered Life Encounter unstable life shaped by decades of exposure and experimentation.
Tactile Analog Interaction Operate grounded, period-accurate Cold War machinery.
Slow-Burn Survival Tension
Dread built through atmosphere, isolation, and uncertainty.
Environmental Narrative Uncover meaning through routines, spaces, and fragments.
Psychological Dossier System
At the conclusion of X300, the facility generates your own classified psychological dossier based on your behavior throughout the game, a document players can choose to print and keep.
Your decisions, hesitation, aggression, obedience, curiosity, and survival behavior are quietly observed during moments of fear, isolation, uncertainty, and pressure.
The final dossier is not based on who you believed yourself to be.
It is based on how you actually behaved inside the facility.
Steam data © 2026 Valve Corporation. Trademarks are property of their respective owners.
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