LeftUnknown (AppID: 3977480)

LeftUnknown is built around interactivity and player freedom. Everything in the game is movable, physics-based, and fully interactable. Players have complete control over how they explore and engage with the environment—no invisible walls or constant loading screens.

Explore an abandoned underground complex filled with puzzles and secrets. Fight mutants and security drones, collect, buy, and sell items, manage your inventory, weight, and bleeding. Uncover scattered notes and diaries to piece together what happened in the complex.

Experience satisfying and dynamic combat, with weapons that feature recoil, bullet spread, and physics-driven interactions. Create chaos by exploding gas cylinders or tossing grenades to send objects—and enemies—flying.

Activate god mode, become invincible, or spawn dozens of bricks, drones, or even beds with console commands. Let your imagination run wild.

Story - "Marius, a former military officer turned nature photographer, ventures into a remote forest to film wildlife. While recording, he stumbles upon two Live-D Corporation agents beating and executing a civilian. Hidden in the bushes, he captures the entire event on camera.

Marius has long suspected Live-D of corruption and had been collecting scattered evidence—but this is the first solid proof. As he tries to leave the scene, he accidentally snaps a branch. The agents hear it. He narrowly escapes, but in the rush, he unknowingly drops his wallet.

Back home, as he reviews the footage, dread sets in. He notices his wallet is missing—left behind at the scene. Panic kicks in. Live-D now has his identity.

Just as he begins to consider his next move, the power cuts out. Moments later, masked men storm his home.

Marius is knocked out cold and awakens chained inside a secret Live-D underground complex. Live-D were thrilled—they had finally captured the person who had been spying on them, causing problems for years. Marius was just in time for the researchers to test their newly created weapon: a serum designed to turn any living being into a parasite that spreads and ultimately destroys entire cities or even countries.

Unfortunately for Live-D, the results didn’t go as planned. Instead of transforming into a monster, Marius falls into a coma.

Twenty years later, something went terribly wrong. The complex got abandoned and wasted. Marius awakens—alone, disoriented, and with no idea what has become of the world."

Further details—and the events following Marius’s awakening—will be revealed as the game unfolds.