Single-player games like Space Run Galaxy
Below are 11 single-player Steam games similar to Space Run Galaxy, 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 Space Run Galaxy page.
Ranked picks
- 1

Space Run
Single-player alternative to Space Run Galaxy — playable solo, no multiplayer required. Shares Strategy and Indie with Space Run Galaxy.
Space Run is a «real-time spaceship construction strategy game». Space Run takes the well-known Tower Defense-style gameplay and twists it, challenging you to manage and protect a spaceship and its cargo against the hazards of deep space!
- 2

AI War: Fleet Command
Single-player alternative to Space Run Galaxy — playable solo, no multiplayer required. Shares Strategy and Indie with Space Run Galaxy.
"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...
- 3

FTL: Faster Than Light
Single-player alternative to Space Run Galaxy — playable solo, no multiplayer required. Shares Strategy and Indie with Space Run Galaxy.
This "spaceship simulation roguelike-like" allows you to take your ship and crew on an adventure through a randomly generated galaxy filled with glory and bitter defeat.
- 4

Infested Planet
Single-player alternative to Space Run Galaxy — playable solo, no multiplayer required. Shares Strategy and Indie with Space Run Galaxy.
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.
- 5

DG2: Defense Grid 2
Single-player alternative to Space Run Galaxy — playable solo, no multiplayer required. Shares Strategy and Indie with Space Run Galaxy.
Great strategy is timeless. Build, adapt, and defend across dynamic maps, solo or online - every session brings new strategies, new solutions, and new surprises. Now is the perfect time to enter the grid.
- 6

Anomaly 2
Single-player alternative to Space Run Galaxy — playable solo, no multiplayer required. Shares Strategy and Indie with Space Run Galaxy.
Anomaly 2 is a sequel to the critically acclaimed Anomaly Warzone Earth. Maintaining the core elements of the original, Anomaly 2 adds plenty of new features: unit morphing, over million tactical combinations, post-apo world and tower defense vs tower offense multiplayer mode.
- 7

Sol Survivor
Single-player alternative to Space Run Galaxy — playable solo, no multiplayer required. Shares Strategy and Indie with Space Run Galaxy.
Jump in to intense turret defense action with Sol Survivor! Build turrets to defend your colony and the innocent colonists within. Smash enemies with volleys of actively-controlled orbital support. Play with friends in co-operative and competitive multiplayer matches or test your mettle against our new Survival mode!
- 8

Stellar Initiative
Single-player alternative to Space Run Galaxy — playable solo, no multiplayer required. Shares Strategy with Space Run Galaxy.
Stellar Initiative is a roguelike tower defense game where you land on the planet and use your orbit ship to deliver buildings and support you with fire. Complete missions, install new upgrades, discover powerful artifacts, and find the best strategy!
- 9

Ravenswatch
Single-player alternative to Space Run Galaxy — playable solo, no multiplayer required.
Fallen heroes of old folk tales and legends: you are on the verge of a crucial battle against the Nightmare invading and corrupting your world. A roguelike action game from the creators of Curse of the Dead Gods©, playable solo or in online co-op.
- 10

Curse of the Dead Gods
Single-player alternative to Space Run Galaxy — playable solo, no multiplayer required.
You seek untold riches, eternal life, divine powers - it leads to this accursed temple, a seemingly-infinite labyrinth of bottomless pits, deadly traps, and monsters.
- 11

Masters of Anima
Single-player alternative to Space Run Galaxy — playable solo, no multiplayer required. Shares Strategy with Space Run Galaxy.
Delve into an original adventure and defy the forces of evil in strategic, action-packed battles. Summon and control large armies of up to 100 Guardians thanks to intuitive and innovative gameplay and make quick tactical decisions to prevail.