It was never meant to be understood. 

ABOUT THIS GAME

A New Kind of Survival Horror

Most horror games begin when the monster appears.

X300 begins the moment you step into the Australian Outback. Search for your missing brother across the Australian Outback and beneath a forgotten Cold War facility. Above ground, a living wall of black ash stalks the horizon. Below, an unseen intelligence still believes the Facility is operational.

Your younger brother, Michael Mercer, vanished while investigating rumours of a forgotten military installation hidden somewhere beyond the edge of the map.

Weeks later, an emergency transmission arrives with a single set of coordinates.

Determined to bring your brother home, you follow the only lead you have into one of the most isolated places on Earth.

Your journey ends at the gates of a military compound that officially doesn't exist. The entrance is still guarded. The intercom still answers. Someone inside still expects authorised personnel.

To find Michael, you'll need to survive the unforgiving Australian Outback, uncover hidden entrances beneath the desert, and piece together a mystery that has remained buried for decades.

EXPOSURE HORROR

Most horror games make the monster the threat. X300 makes the environment the threat.

The Australian Outback is beautiful, vast, and utterly unforgiving. You'll have to figure out how to survive the heat, cold, thirst and hostile wildlife. Every decision to venture further into the unknown carries real risk because if something goes wrong, no one is coming.  We call this Exposure Horror.

A style of survival horror where the landscape itself is just as dangerous as the creatures that inhabit it.

INVESTIGATE A MYSTERY BURIED BENEATH THE DESERT

Your search for Michael leads you across a sprawling military exclusion zone filled with abandoned survey camps, forgotten homesteads, derelict railway sidings, hidden bunkers, weather stations, and long-forgotten military infrastructure.

DESCEND BENEATH THE FACILITY

Hidden beneath the Australian Outback lies a vast Cold War military installation unlike anything you've explored before. Constructed during the 1950s, the Facility was built as a self-contained underground town supporting classified research during Australia's nuclear era.  Officially, it no longer exists. Unofficially...its systems never stopped operating.

Every room, every document, every forgotten workstation reveals another fragment of the truth.

THE FACILITY IS WATCHING

Funny thing about this place, it keeps records.

The Facility quietly observes how you play. Not simply what you accomplish...but how you accomplish it.

By the end of your journey, you'll receive a personalised classified intelligence dossier analysing your behaviour, decisions, and the kind of person the Facility believes you became.

No two investigations are exactly alike.

Because no two people respond to fear, uncertainty, and isolation in exactly the same way.

KEY FEATURES

???? Investigate a Forgotten Mystery

Follow the trail left by your missing brother as you uncover documents, abandoned locations, forgotten infrastructure, and clues buried beneath the Australian Outback.

???? Explore the Australian Outback

Survive a vast military exclusion zone filled with abandoned survey camps, remote homesteads, weather stations, hidden bunkers, railway sidings, and dangerous wildlife.

???? Descend Beneath the Facility

Enter a Facility That Watches Back – Beneath the desert, someone quietly controls every door, corridor and system, manipulating your path through an institution that never stopped operating.

???? Experience Exposure Horror

Survive an unforgiving environment where heat, darkness, isolation, scarce resources, and the landscape itself become your greatest enemies.

???? Escape the Ash Front

Outrun the Ash Front – A relentless atmospheric predator roams the Australian Outback, forcing you to change course, seek shelter, and adapt every expedition.

⚙ Solve Analogue Puzzles

Restore power, operate authentic Cold War machinery, decipher military systems, and unlock new paths using observation, experimentation, and ingenuity.

???? Face Australia's Deadliest Wildlife

Encounter altered creatures inspired by Australia's unique fauna, each demanding different tactics, preparation, and respect for the environment they inhabit.

???? Build Your Classified Dossier

Your choices shape a unique psychological profile analysing your investigation, behaviour, and decisions throughout the game.

Some mysteries refuse to stay buried.

The surface belongs to the Ash Front. The underground belongs to a faceless menace. Somewhere between them lies the truth behind your brother's disappearance.

Search for your brother.

Survive the Outback.

Uncover the truth.

Welcome to X300.