Single-player games like Star Defence
Below are 8 single-player Steam games similar to Star Defence, 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 Defence page.
Ranked picks
- 1
Galactic Defense: Automation
Single-player alternative to Star Defence — playable solo, no multiplayer required. Shares Strategy and Simulation with Star Defence.
"Galactic Defense: Automation" is a Placement, Automated Battle, Real-Time Strategy game. Players can place construction plans, observe automated construction, automated battles, and unlock new technologies. Players pass the level after collecting tech points through activities.
- 2
AsteroidTD
Single-player alternative to Star Defence — playable solo, no multiplayer required. Shares Strategy and Indie with Star Defence.
Try to survive in infinite asteroid cloud as long as possible in reworked tower defence style. FInd your own playstyle and beat your own records or chillout with original ambient soundtracks. Build, explore, think - everything to create your own colony in this cold space.
- 3
Ship Regulus
Single-player alternative to Star Defence — playable solo, no multiplayer required. Shares Strategy and Indie with Star Defence.
In the first year of the ephemeris, the warp engine was invented. Due to the initial engine being too large, it was installed on the space city Regulus. During engine testing, the jump signal attracted an alien fleet, and the Ship Regulus embarked on a flight path.
- 4
Quiet Bruise
Single-player alternative to Star Defence — playable solo, no multiplayer required. Shares Strategy and Indie with Star Defence.
Play as dumb plushies trying to keep a collapsing factory alive in this tower defence factory automation game. Build chaotic production lines, fight off hordes of cats and crocs, survive your own terrible decisions and keep the factory running.
- 5
Earth’s Last Defense Idle Fleet
Single-player alternative to Star Defence — playable solo, no multiplayer required. Shares Strategy and Indie with Star Defence.
Command Earth’s last fleet in an idle space-defense game where every wave, kill, upgrade, ship, and module pushes your defense further. Build fighters, drones, corvettes, heroes, turrets, and permanent upgrades as the alien hive grows stronger.
- 6
TechGuardian: Territory Defense
Single-player alternative to Star Defence — playable solo, no multiplayer required. Shares Strategy and Indie with Star Defence.
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.
- 7
Pixel Starships 2
Single-player alternative to Star Defence — playable solo, no multiplayer required. Shares Strategy and Simulation with Star Defence.
First Glimpse on Steam Next: Build, Configure, and Manage every aspect of your own Starship. An FTL-esque game in a MMO setting. Pre bundled with deep strategy, exploration, PVP, market economy, trading, mining. Basically everything a star captain wants to do after a day at the office :)
- 8
Kitchen Crisis
Single-player alternative to Star Defence — playable solo, no multiplayer required. Shares Indie with Star Defence.
Kitchen Crisis is a culinary defense game. You are abducted by aliens and must satisfy their appetite. If you want to live to see another day, efficiently arrange your cooking appliances, upgrade your ingredients and tools! In order to survive, make wise decisions according to everchaning recipes.