Single-player games like Unknown Signal
Below are 11 single-player Steam games similar to Unknown 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 Unknown Signal page.
Ranked picks
- 1
Unknown Signal: Invasion
Single-player alternative to Unknown Signal — playable solo, no multiplayer required. Shares Action and Indie with Unknown Signal.
Unknown Signal: Invasion is a continuation of the exciting sci-fi game. This time you have to go to an unknown planet to investigate a new mysterious signal coming from an unknown source.
- 2
Magic Ring
Single-player alternative to Unknown Signal — playable solo, no multiplayer required. Shares Action and Adventure with Unknown Signal.
Magic Ring is an exciting 3D game that takes you on a dangerous journey through the desert to take part in a legendary tournament!
- 3
Deep Space
Single-player alternative to Unknown Signal — playable solo, no multiplayer required. Shares Action and Indie with Unknown Signal.
You are entrusted with the role of one of the elite captains, put on a high-tech mech suit suitable for travel into space and go on an exciting journey.
- 4
Magic Runes
Single-player alternative to Unknown Signal — playable solo, no multiplayer required. Shares Action and Indie with Unknown Signal.
Magic Runes - An exciting 3D game with adventure elements. You have to go on a dangerous adventure across a mysterious island full of ancient dinosaurs. Your goal is to cleanse the lands of darkness and return peace and tranquility to these lands!
- 5
Deadly Threat
Single-player alternative to Unknown Signal — playable solo, no multiplayer required. Shares Action and Indie with Unknown Signal.
Deadly Threat is an action-adventure game with RPG and first-person shooter (FPS) elements. You have to control the hero and explore mysterious locations in the dungeon.
- 6
Escape The Forest
Single-player alternative to Unknown Signal — playable solo, no multiplayer required. Shares Action and Indie with Unknown Signal.
Can you escape the forest? Experience the isolation of being the last person in the dark woods. Uncover the mysteries of your missing neighbors and discover who or what took them from their homes, all while escaping with your life.
- 7
PolyClassic: Wild
Single-player alternative to Unknown Signal — playable solo, no multiplayer required. Shares Action and Indie with Unknown Signal.
This game is an action game that combines elements of the classic retro shooter and low poly styling. The player's task is to destroy all enemies that come across on the way.
- 8
Jump Space
Single-player alternative to Unknown Signal — playable solo, no multiplayer required. Shares Action and Indie with Unknown Signal.
Jump Space (formerly Jump Ship) is a mission based co-op PvE for 1-4 players, where you are the crew of a spaceship. Transition seamlessly from crewing the ship to on-foot exploration and space walks. Explore, upgrade, and survive intense encounters in deep space together.
- 9
Forest Keeper
Single-player alternative to Unknown Signal — playable solo, no multiplayer required. Shares Indie and Adventure with Unknown Signal.
Forest Keeper is a 3D logic game with many exciting levels!
- 10
Forest Keeper 2
Single-player alternative to Unknown Signal — playable solo, no multiplayer required. Shares Indie and Adventure with Unknown Signal.
Forest Keeper 2 is a continuation of the first part of the game! Plunge back into a little adventure with the forest guardian!
- 11
Ancient Scroll
Single-player alternative to Unknown Signal — playable solo, no multiplayer required. Shares Indie and Adventure with Unknown Signal.
Ancient Scroll - the game is a mixture of an adventure game and classic quests. You have to go to an abandoned ranch in search of an ancient scroll. Where an exciting adventure awaits you, hiding many mysteries!