IMHO.

Single-player games like Bacteria Wars

Below are 8 single-player Steam games similar to Bacteria Wars, 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 Bacteria Wars page.

Ranked picks

  1. 1
    Nuts Protocol — Steam game cover

    Nuts Protocol

    Single-player alternative to Bacteria Wars — playable solo, no multiplayer required. Shares Action and Strategy with Bacteria Wars.

    You might think this is yet another Tower Defense game. Well, friend, you are not wrong! The twist? It's fast-paced! Your greatest resource is positioning - and moving around is a must. Also, you control an orange Squirrel equipped with more-than-military-grade turrets! OMG - can it get any better?

    2022ActionStrategyIndie3.99 USDSingle-playerSimilar games →
  2. 2
    Extinction Eclipse — Steam game cover

    Extinction Eclipse

    Single-player alternative to Bacteria Wars — playable solo, no multiplayer required. Shares Action and Strategy with Bacteria Wars.

    You are in command of the human fleet, searching for asteroids to mine, extract resources and build bases and more ships to defeat aliens invaders. This simple and short action RTS has a full and exciting campaign, and a skirmish mode that allows you to play a different mission on every match.

    2022ActionStrategyIndie9.99 USDSingle-playerSimilar games →
  3. 3
    Prime Domination — Steam game cover

    Prime Domination

    Single-player alternative to Bacteria Wars — playable solo, no multiplayer required. Shares Action and Strategy with Bacteria Wars.

    Prime Domination is a real-time strategy game where you build your base, manage finance, produce powerful military units, and battle against AI or other players in large-scale multiplayer matches with up to 10 commanders.

    ActionStrategyIndieSingle-playerSimilar games →
  4. 4
    9-Bit Armies: A Bit Too Far — Steam game cover

    9-Bit Armies: A Bit Too Far

    Single-player alternative to Bacteria Wars — playable solo, no multiplayer required. Shares Action and Strategy with Bacteria Wars.

    Unleash voxel warfare in 9-Bit Armies: A Bit Too Far. Lead a modern military, build bases, unlock units, and attack in all-out war. Engage on land, sea and air in over two dozen missions, online skirmishes, or co-op. Easy to learn, a challenge to master.

    2024ActionStrategyIndie19.99 USDDeck PlayableSingle-playerSimilar games →
  5. 5
    Urban War Defense — Steam game cover

    Urban War Defense

    Single-player alternative to Bacteria Wars — playable solo, no multiplayer required. Shares Action and Strategy with Bacteria Wars.

    Lead through an action-packed fast-paced tower defense game with a story of an invasion on your homeland by a large foreign force and as a newly appointed commander do what you can to help your country fight back and defend against this enemy force which is approaching from the coast.

    2017ActionStrategyIndieSingle-playerSimilar games →
  6. 6
    Home Wars — Steam game cover

    Home Wars

    Single-player alternative to Bacteria Wars — playable solo, no multiplayer required. Shares Action and Strategy with Bacteria Wars.

    Do you hate bugs and arachnids? Seeing them creeps you out? Would you like them to disappear off the face of the Earth? GOOD! This is the right game for you! In HW you’ll play as a General of a toy soldiers army, with the sole purpose of saving the owner’s house from the invasion of those damn Bugs.

    2017ActionStrategyIndie9.99 USDDeck PlayableSingle-playerSimilar games →
  7. 7
    Crossfire: Legion — Steam game cover

    Crossfire: Legion

    Single-player alternative to Bacteria Wars — playable solo, no multiplayer required. Shares Action and Strategy with Bacteria Wars.

    Crossfire: Legion is a real time strategy game featuring tactical action in furious battles across a shattered version of the near future. Raise and customize your army to engage in intense online combat and carve your own path as you rise through the ranks. It’s a new generation of warfare.

    2022ActionStrategyDeck PlayableSingle-playerSimilar games →
  8. 8
    Door Kickers 2: Task Force North — Steam game cover

    Door Kickers 2: Task Force North

    Single-player alternative to Bacteria Wars — playable solo, no multiplayer required. Shares Action and Strategy with Bacteria Wars.

    Command military Special Ops Teams in gripping tactical combat against a Middle East-based terrorist network. Sequel to RockPaperShotgun's "Best Tactics Game of 2014".

    2025ActionStrategyIndie24.99 USDDeck VerifiedSingle-playerSimilar games →