Single-player games like Alienshire
Below are 14 single-player Steam games similar to Alienshire, 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 Alienshire page.
Ranked picks
- 1
Knights vs Aliens
Single-player alternative to Alienshire — playable solo, no multiplayer required. Shares Strategy and Indie with Alienshire.
Command knights, aliens, and other historically dubious nations in a free real-time tower conquest game rebuilt from a 2009 iPad original. Grow armies, capture towers, and outmaneuver adaptive AI through 30 campaign levels.
- 2
72 Seconds
Single-player alternative to Alienshire — playable solo, no multiplayer required. Shares Strategy and Indie with Alienshire.
72 Seconds is a fast-paced isometric action RTS where tactical squad micro meets ARPG progression. Command specialized units, build defenses, upgrade skill trees, and battle hostile alien threats. Adapt to randomized enemy affixes and survive high-stakes campaign permadeath.
- 3
Warfactory: Automation RTS
Single-player alternative to Alienshire — playable solo, no multiplayer required. Shares Strategy and Indie with Alienshire.
Warfactory is an automation RTS where production defines the war effort. Build assembly lines to forge an army of machines, then feed thousands of units into massive real-time battles where every loss must be replaced by your factory.
- 4
Age of Mythology: Retold
Single-player alternative to Alienshire — playable solo, no multiplayer required. Shares Strategy with Alienshire.
Play as mythological Gods and smite your enemies in this award-winning, mythological Real-Time Strategy classic given new life. Wage war across timeless campaigns, fierce skirmishes, and god-powered multiplayer modes.
- 5
Moduwar
Single-player alternative to Alienshire — playable solo, no multiplayer required. Shares Strategy and Indie with Alienshire.
Moduwar is an adaptive organic RTS where you control an alien creature, Modu - and your body is your army. Grow new organs, split, merge and mutate them into unique units that adapt to your needs as you fight against human and alien threats in single and multiplayer modes.
- 6
Diplomacy is Not an Option
Single-player alternative to Alienshire — playable solo, no multiplayer required. Shares Strategy and Indie with Alienshire.
Diplomacy is Not an Option is a strategy game set in a medieval fantasy world. Build your town and defenses, raise huge armies and fight against massive hordes of enemies. How long can you survive?
- 7
Calyx
Single-player alternative to Alienshire — playable solo, no multiplayer required. Shares Strategy with Alienshire.
A strategy game with a new kind of enemy, Calyx puts you in charge of a space mining outpost, locked in battle against powerful plant-aliens. Build your base, gather resources, assemble your forces, and take on the Calyx. With only an out-of-date AI for company, can you survive?
- 8
CARNAGE OFFERING Tower Defense
Single-player alternative to Alienshire — playable solo, no multiplayer required. Shares Strategy and Indie with Alienshire.
The replicator robots are back! It's 2528. The machines are increasingly infecting the planets with genetically modified monsters. Challenge them and try to stop the onslaught. Upgrade buildings and heroes, mine resources, discover technology and fight to save humanity!
- 9
Alien Weapon Test Grounds
Single-player alternative to Alienshire — playable solo, no multiplayer required. Shares Indie with Alienshire.
Alien weapons with unique physics await in this fast-paced FPS. Battle waves of enemies across diverse landscapes, lighting, and weather. Beware the unstable space-time continuum.
- 10
Alien Grounds
Single-player alternative to Alienshire — playable solo, no multiplayer required. Shares Indie with Alienshire.
Single-player arena shooter. Weird weapons. Relentless robots. Easy to play, hard to score. Enter the chaos, shoot the bots, and compete in the Monthly Challenge.
- 11
Exit Dream
Single-player alternative to Alienshire — playable solo, no multiplayer required. Shares Indie with Alienshire.
A free first-person horror game about dream puzzles - unsettling, surreal and built on strange logic.
- 12
NZ78
Single-player alternative to Alienshire — playable solo, no multiplayer required. Shares Indie with Alienshire.
A short atmospheric sci-fi story told through text and ink-wash images, as New Zealand faces strange events beyond explanation.
- 13
Naomi’s End
Single-player alternative to Alienshire — playable solo, no multiplayer required. Shares Indie with Alienshire.
Naomi wakes decades older in a house she does not recognize, and discovers that escape may cost the future.
- 14
Flak Duty
Single-player alternative to Alienshire — playable solo, no multiplayer required. Shares Indie with Alienshire.
Flak Duty is a short, linear sci-fi visual novel about an operator whose routine shift inside an automated flak machine goes wrong. Read the story in an illustrated filmstrip format, with page navigation and light or dark reading modes.