In SubSelf: Lies Deep, players descend into the remains of a mysterious underwater research facility abandoned after a catastrophic incident. What begins as a recovery mission quickly turns into a disturbing journey through flooded corridors, forgotten experiments and traces of a truth buried beneath the ocean floor.

You are a prisoner offered a single chance at freedom. In exchange, you must descend into the depths of an alien ocean and recover lost data from a sunken research station, abandoned under mysterious circumstances by a powerful space mega-corporation. Armed with limited equipment and guided only by fragmented transmissions, players must explore oppressive deep-sea environments while managing oxygen, navigating darkness, and confronting the psychological effects of prolonged isolation beneath the surface.

As you explore the wreckage, you will piece together fragments of the past—logs, corrupted data, scattered notes, and the silent testimony of the station itself. Every corridor, every broken system, every anomaly tells part of a story that no one was meant to uncover.

Your objective is simple:
Survive. Recover the data. Reconstruct the truth.

But the deeper you go, the harder it becomes to separate reality from perception.

This is a world defined by isolation, disorientation, and creeping uncertainty. The ocean is vast. Silent. Watching.

And you are not alone.

The game combines atmospheric exploration, narrative-driven horror, environmental storytelling, and survival mechanics, placing a strong emphasis on tension and immersion rather than direct combat. The deeper players descend, the more reality itself begins to fracture.

Players can experience the first playable demo during Steam Ocean Fest.

Key Features:

• Explore a haunting underwater research complex hidden beneath an alien ocean;
• Experience psychological horror inspired by deep-sea isolation and cosmic dread;
• Manage oxygen and resources while surviving hostile underwater environments;
• Uncover fragmented logs, recordings, and hidden secrets connected to the station’s downfall;
• Descend into increasingly oppressive depths where perception and reality begin to blur.

SubSelf: Lies Deep is coming to PC (Steam) in 2026.