Single-player games like Star Sine Signal
Below are 8 single-player Steam games similar to Star Sine Signal, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Star Sine Signal page.
Ranked picks
- 1
Is Anybody There?
Single-player alternative to Star Sine Signal — playable solo, no multiplayer required. Shares Indie and Adventure with Star Sine Signal.
Step into the role of a blind boy hunted by a paranormal entity. Can you avoid being kidnapped by navigating the world through echolocation and listening for every rustle?
- 2
Echoes of Absence
Single-player alternative to Star Sine Signal — playable solo, no multiplayer required. Shares Indie and Adventure with Star Sine Signal.
A narrative psychological horror game where you'll explore different environments and fragments of your past. Solve puzzles and uncover a truth some would rather forget.
- 3
Dreadline Express
Single-player alternative to Star Sine Signal — playable solo, no multiplayer required. Shares Indie and Adventure with Star Sine Signal.
Dreadline Express is a 1st-person, psychological horror metroidbrainia set aboard the last human train. Unravel mysteries of the enigmatic train, face strange passengers, and shape your path using a unique card-based mechanic that gives you full narrative control. This is no longer our world.
- 4
NULL
Single-player alternative to Star Sine Signal — playable solo, no multiplayer required. Shares Indie and Adventure with Star Sine Signal.
A first-person psychological horror game about grief, obsession, and love. Sleep to enter dreams, take control of them, and descend into deeper layers where time moves slower. Explore, solve puzzles, and uncover the mystery of a grieving father who created a world frozen in time.
- 5
HOLLOW MIRE
Single-player alternative to Star Sine Signal — playable solo, no multiplayer required. Shares Adventure with Star Sine Signal.
A war hero returns to a shattered England, searching for his missing family while confronting nightmares that defy reality. A choice-driven narrative thriller with 8 unique endings.
- 6
Rehaunted
Single-player alternative to Star Sine Signal — playable solo, no multiplayer required. Shares Adventure with Star Sine Signal.
Enter a house where every clue feels wrong. Investigate a brutal crime scene, uncover hidden evidence, and use your detective tools to piece together a disturbing truth buried beneath the silence.
- 7
NEXT OBJECTIVE
Single-player alternative to Star Sine Signal — playable solo, no multiplayer required. Shares Adventure with Star Sine Signal.
The objective marker IS the monster. Play as Tom, a very obedient boy, and teach him how to disobey. Leave the playable area, break the rules, and fight back against a game that wants you to stay on script.
- 8
Arctic Grave
Single-player alternative to Star Sine Signal — playable solo, no multiplayer required. Shares Adventure with Star Sine Signal.
Uncover the mystery of an arctic cargo outpost's lost crew in this horror game. Take in the frozen sea and delve into the depths of the facility, finding items and uncovering new paths with each one to learn what really happened here. But be careful, because something else might be here with you.