Listening stations have detected a massive, non-biological sonar anomaly at the bottom of a remote sector of the Pacific Ocean. Its acoustic signature matches no known terrestrial vessel, and its exact location remains unknown.

You are sent down in a small submersible to investigate possible targets, identify the source of the signal, and report your findings back to the surface.

Navigate by instruments

Visibility is almost zero, and there is no clean HUD. Use the physical instruments inside your cockpit to stay on course: sonar, depth, map, and onboard telemetry. Your front window only shows fragments of what is ahead — the rest must be understood through sound, signals, and instruments.

Scan unknown targets

Reach each target, maneuver into optimal range, and use onboard sensors to send scan data back to the surface. Each scan reveals another piece of the mystery, drawing you closer to the source of the anomaly.

Trace the source

What begins as a search for an unknown sonar anomaly gradually leads toward something hidden beneath the seafloor. Distorted radio contact, impossible structures, and unexplained signals reshape the mission piece by piece.

Something down there has been waiting for a very long time. And every scan brings you closer to it.