SSTR

SSTR is a single-player, escape-room-style puzzle game set aboard Horizon, a colony ship adrift in space. Awakened from cryosleep, you are alone on a ship where Sister, the AI responsible for the colonists’ safety, has gone rogue and is hunting the crew. Horizon is in lockdown, and you need to find manual override keys to unlock doors and reach Sister’s command core.

Explore Horizon

The crew were hunted down but left clues for possible survivors: messages carved into walls, ciphers smeared on floors in blood, and entries on computer terminals. As you explore, you piece together information from the ship’s surroundings and text left by the crew to learn what happened to them and uncover the truth about Sister.

Solve the puzzles

You examine the clues and work through the logic behind the locked doors to escape each room and move closer to shutting SSTR down. The crew’s markings may be the ramblings of people driven mad by Sister or coded information intended to help you.

Survive the drones

Sister’s drones hunt you as you make your way through Horizon. You scavenge resources aboard the ship to build automated defense turrets and hold the drones back.