Single-player games like UFO ENEMY KNOWN
Below are 8 single-player Steam games similar to UFO ENEMY KNOWN, 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 UFO ENEMY KNOWN page.
Ranked picks
- 1

Defying Fate
Single-player alternative to UFO ENEMY KNOWN — playable solo, no multiplayer required. Shares Action and Indie with UFO ENEMY KNOWN.
A top-down bullet hell space shooter that will test your perseverance. Blast and shoot your way through hordes of asteroids, enemy ships and whatever (and whoever) else you'll run into on your journey! Supports local co-op multiplayer over your local network.
- 2

Project Landsword
Single-player alternative to UFO ENEMY KNOWN — playable solo, no multiplayer required. Shares Action and Indie with UFO ENEMY KNOWN.
A fast-paced top-down mecha shooter with fully destructible environments and light stealth elements. Pilot a mech and engage in unrestricted collateral damage!
- 3

Blow it up
Single-player alternative to UFO ENEMY KNOWN — playable solo, no multiplayer required. Shares Action and Simulation with UFO ENEMY KNOWN.
Blow it up is a physics destruction game. Unlock new bombs, explore the world and go on an epic journey of destruction.
- 4

Hop Slasher
Single-player alternative to UFO ENEMY KNOWN — playable solo, no multiplayer required. Shares Action and Indie with UFO ENEMY KNOWN.
Hop Slasher is a cartoony arcade game where your movement never stops.
- 5

Destructive Physics - Destruction Simulator
Single-player alternative to UFO ENEMY KNOWN — playable solo, no multiplayer required. Shares Action and Indie with UFO ENEMY KNOWN.
Slowmotion, gravitation control, destructible terrain, blackhole and much more! Destroy a small (huuge) building, using different types of weapons (even custom). When you get tired of exploding prepared structures, you can always visit the map editor to build whatever you want.
- 6

Red Faction®: Armageddon™
Single-player alternative to UFO ENEMY KNOWN — playable solo, no multiplayer required. Shares Action with UFO ENEMY KNOWN.
Red Faction: Armageddon Path to War includes 4 new missions, 2 unlockable items and 10 new achievements!
- 7

AST-Hero
Single-player alternative to UFO ENEMY KNOWN — playable solo, no multiplayer required. Shares Action and Indie with UFO ENEMY KNOWN.
Fight for survival in this top-down shoot ‘em up in space, featuring unique hand-drawn visuals and sounds. It offers a challenging experience that is easy to learn, but difficult to master.
- 8

Crumbling City
Single-player alternative to UFO ENEMY KNOWN — playable solo, no multiplayer required. Shares Action and Indie with UFO ENEMY KNOWN.
Become a giant dinosaur and flatten entire cities before the City Defenders can stop you! Crumbling City is chaos and fun in a physics based destructible world. Rampage across cities as a colossal dinosaur and leave nothing standing! Nature’s revenge has never been this fun!