IMHO.

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. 1
    Outbreak: Epidemic — Steam game cover

    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.

    2020ActionIndieAdventure1.99 USDSingle-playerSimilar games →
  2. 2
    Steel Graves — Steam game cover

    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.

    2021ActionStrategyIndie9.99 USDSingle-playerSimilar games →
  3. 3
    Outbreak — Steam game cover

    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.

    2017ActionIndieAdventure0.99 USDDeck PlayableSingle-playerSimilar games →
  4. 4
    The Fibrous - Operation Reclaim — Steam game cover

    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.

    2026ActionAdventureEarly AccessSingle-playerSimilar games →
  5. 5
    Variant 22 — Steam game cover

    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.

    2023ActionIndie13.99 USDSingle-playerSimilar games →
  6. 6
    Tom Clancy’s The Division® 2 — Steam game cover

    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.

    2023ActionAdventureRPG29.99 USDDeck PlayableSingle-playerSimilar games →
  7. 7
    STAR WARS™: Battlefront Classic Collection — Steam game cover

    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.

    2024Action26.25 USDDeck VerifiedSingle-playerSimilar games →
  8. 8
    Endgame: Road To Salvation — Steam game cover

    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.

    2021ActionIndieAdventure11.99 USDSingle-playerSimilar games →
  9. 9
    Cliff Empire — Steam game cover

    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!

    2019StrategyIndieSimulation17.99 USDDeck PlayableSingle-playerSimilar games →