Single-player games like Starfort
Below are 8 single-player Steam games similar to Starfort, 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 Starfort page.
Ranked picks
- 1
Astro Company
Single-player alternative to Starfort — playable solo, no multiplayer required. Shares Strategy with Starfort.
Defend your Core in an endless tower defense where every decision matters. Build too slow and you’re overrun. Build too fast and chaos breaks your defenses.
- 2
Poker Defense
Single-player alternative to Starfort — playable solo, no multiplayer required. Shares Strategy and Casual with Starfort.
Build your defenses with the towers you earn from playing cards and use your power ups to stop your enemies in this strategic card game tower defense!
- 3
Von Neumann Project
Single-player alternative to Starfort — playable solo, no multiplayer required.
Von Neumann Project is about a self replicating probe as it charts the galaxies, peacefully of course. Mine, build, expand, and explore in this sci-fi RTS. Remember to have as little impact on your surroundings as possible and protect yourself at all costs.
- 4
Stellacore Defense
Single-player alternative to Starfort — playable solo, no multiplayer required. Shares Strategy and Indie with Starfort.
A 2D pixel art tower defense game with unparalleled strategic depth. Deploy modules to redirect enemies, use tactical chips to command the battlefield, and upgrade towers with multi-branch modifications to protect humanity's vital Stellacore energy.
- 5
TechGuardian: Territory Defense
Single-player alternative to Starfort — playable solo, no multiplayer required. Shares Strategy and Indie with Starfort.
This is a sci-fi strategy game featuring a Defense Mode focused on tower defense and an Attack Mode focused on combat. The game includes over 30 different buildings and units, all of which can be upgraded through entry editing to enhance their performance and firepower.
- 6
AGE OF ALIENS
Single-player alternative to Starfort — playable solo, no multiplayer required. Shares Strategy and Casual with Starfort.
On an alien world, you must defend yourself in this unique base-building tower-defense game. Build a base by placing blocks, turrets and traps in order to survive the hoards of aliens.
- 7
Millennium Conflict
Single-player alternative to Starfort — playable solo, no multiplayer required. Shares Strategy and Indie with Starfort.
You are the last survivor. Capture towers, command a squad of unique generals, and battle through 40 missions across 10 distinct worlds as you fight to reclaim a universe that has fallen to the enemy.
- 8
Plasma Dome
Single-player alternative to Starfort — playable solo, no multiplayer required. Shares Strategy with Starfort.
Plasma Dome is a tactical tower defense with roguelite progression and no predefined paths. Defend your city from an aerial assault of geometric entities from another dimension.