Single-player games like AI Olympius
Below are 9 single-player Steam games similar to AI Olympius, 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 AI Olympius page.
Ranked picks
- 1

Outbreak: Epidemic
Single-player alternative to AI Olympius — playable solo, no multiplayer required. Shares Action and Indie with AI Olympius.
Return to the world of 4-player co-op survival horror with classic gameplay, strict inventory management, crushing enemies, horrific difficulty and more as you and a group of survivors try to survive the epidemic.
- 2

Steel Graves
Single-player alternative to AI Olympius — playable solo, no multiplayer required. Shares Action and Indie with AI Olympius.
A nervous Action / Strategy / Building game in multiplayer that oppose humans against aliens in huge battlefields. Build your base anywhere, upgrade your equipment, recruit hundreds of IA soldiers, and take part in the greatest intergalactic war.
- 3

Outbreak
Single-player alternative to AI Olympius — playable solo, no multiplayer required. Shares Action and Indie with AI Olympius.
Race against the clock and battle the undead in this co-op survival horror nightmare.
- 4

The Fibrous - Operation Reclaim
Single-player alternative to AI Olympius — playable solo, no multiplayer required. Shares Action and Adventure with AI Olympius.
The Fibrous - Sci-Fi Online or Single-Player TPS (Over-The-Shoulder) covering the story of an ex-marine recruited by what's left of the military to help take back Earth after a meteor crash-lands into Earth and aliens with fiber-like skin emerge, thinking they can take this planet for their own.
- 5

Variant 22
Single-player alternative to AI Olympius — playable solo, no multiplayer required. Shares Action and Indie with AI Olympius.
Variant 22 is a survival game set in a procedural roguelike post American wasteland. Singleplayer or Multiplayer Coop, Scavenge loot from contaminated areas then base build back in the "safe zone" against endless hordes of the infected.
- 6

Tom Clancy’s The Division® 2
Single-player alternative to AI Olympius — playable solo, no multiplayer required. Shares Action and Adventure with AI Olympius.
Join The Division in this open world tactical shooter. Engage in intense cover-based combat, team up with friends, and build your ultimate agent to save Washington, D.C.
- 7

STAR WARS™: Battlefront Classic Collection
Single-player alternative to AI Olympius — playable solo, no multiplayer required. Shares Action with AI Olympius.
Play the classic STAR WARS™ Battlefront games, online and offline in this definitive collection.
- 8

Endgame: Road To Salvation
Single-player alternative to AI Olympius — playable solo, no multiplayer required. Shares Action and Indie with AI Olympius.
A high-octane road trip through a besieged world during a demon-infested zombie apocalypse. Rescue survivors, form a caravan, call in various support drops or air strikes, loot random structures for supplies or craft them yourself, modify common vehicles into post-apocalyptic machines of war.
- 9

Cliff Empire
Single-player alternative to AI Olympius — playable solo, no multiplayer required. Shares Indie with AI Olympius.
After a nuclear war life on the surface became impossible. A 300m thick radioactive fog covered the Earth. We are looking for bold active people to manage the process of restoring life on Earth. Join!