Single-player games like Phantom Signal — Sci-Fi Strategy Game
Below are 10 single-player Steam games similar to Phantom Signal — Sci-Fi Strategy Game, 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 Phantom Signal — Sci-Fi Strategy Game page.
Ranked picks
- 1
AI War: Fleet Command
Single-player alternative to Phantom Signal — Sci-Fi Strategy Game — playable solo, no multiplayer required. Shares Strategy with Phantom Signal — Sci-Fi Strategy Game.
"You are outgunned. You are massively outnumbered. You must win." These are your orders. Humanity has already fought its war against the machines -- and lost. AI death squads stand watch over every planet and every wormhole, the few remaining human settlements are held captive in orbiting bubbles, and the AIs have turned their...
- 2
Particle Fleet: Emergence
Single-player alternative to Phantom Signal — Sci-Fi Strategy Game — playable solo, no multiplayer required. Shares Strategy and Simulation with Phantom Signal — Sci-Fi Strategy Game.
Build and design your own fleets and stand opposed to the Particulate in this physics/strategy/RTS/fleet hybrid. Build partially destructible and self repairing ships that interact with enemies less controlled by some scripted logic and more driven by a real time massive physics particle simulation.
- 3
Gratuitous Space Battles
Single-player alternative to Phantom Signal — Sci-Fi Strategy Game — playable solo, no multiplayer required. Shares Strategy and Simulation with Phantom Signal — Sci-Fi Strategy Game.
The first ever auto-battler game, from way back in 2009Who needs backstory? Who needs resource-gathering? Diplomacy is so last year. Gratuitous Space Battles cuts right to the chase of sci-fi strategy games, and deals with large, completely unjustified space battles between huge opposing space fleets.
- 4
Revenge of the Titans
Single-player alternative to Phantom Signal — Sci-Fi Strategy Game — playable solo, no multiplayer required. Shares Strategy with Phantom Signal — Sci-Fi Strategy Game.
The ultimate mash-up of Real-time Strategy and Tower Defense!
- 5
Protolife
Single-player alternative to Phantom Signal — Sci-Fi Strategy Game — playable solo, no multiplayer required. Shares Strategy with Phantom Signal — Sci-Fi Strategy Game.
Protolife is an unique tower-based strategy game which gives you a direct control over the builder robot in a struggle against the hungry proto-life organism.
- 6
rymdkapsel
Single-player alternative to Phantom Signal — Sci-Fi Strategy Game — playable solo, no multiplayer required. Shares Strategy with Phantom Signal — Sci-Fi Strategy Game.
Build a space station. Command the tiny crew. Explore the galaxy. A meditative space strategy game.
- 7
Infested Planet
Single-player alternative to Phantom Signal — Sci-Fi Strategy Game — playable solo, no multiplayer required. Shares Strategy with Phantom Signal — Sci-Fi Strategy Game.
Command a team of 5 elite soldiers against an alien horde of 100,000. Surrounded on all sides, you must outmaneuver and outsmart the enemy.
- 8
Horizon
Single-player alternative to Phantom Signal — Sci-Fi Strategy Game — playable solo, no multiplayer required. Shares Strategy and Simulation with Phantom Signal — Sci-Fi Strategy Game.
Horizon is a turn-based space strategy game of galactic exploration and conquest in which you are in control of humanity’s destiny. You will explore deep space, find new frontiers and discover alien artifacts hidden on long-abandoned planets.
- 9
Eufloria HD
Single-player alternative to Phantom Signal — Sci-Fi Strategy Game — playable solo, no multiplayer required. Shares Strategy with Phantom Signal — Sci-Fi Strategy Game.
Experience the celebrated strategy gameplay of Eufloria HD. Conquer asteroids in space and use their resources to grow floral creatures that do your bidding. Expand your empire and fight against several teams of AI opponents that all vie for the same resources and can offer fierce opposition.
- 10
.T.E.S.T: Expected Behaviour — Sci-Fi 3D Puzzle Quest
Single-player alternative to Phantom Signal — Sci-Fi Strategy Game — playable solo, no multiplayer required. Shares Simulation with Phantom Signal — Sci-Fi Strategy Game.
.T.E.S.T: Expected Behavior is a first-person brain twister with a sci-fi plot. On top of logic, you'll need a fast reaction speed, "outside the box" reasoning, and the skill to adapt to unfamiliar situations.