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

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?
- 2

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.
- 3

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.
- 4

Rift Haul TD
Single-player alternative to Bacteria Wars — playable solo, no multiplayer required. Shares Action and Strategy with Bacteria Wars.
Build, upgrade, evolve, and reposition your towers to counter new threats, explore powerful synergies, and stay one step ahead in this fast-paced fantasy tower defense.
- 5

Hell Of War: Combined Arms
Single-player alternative to Bacteria Wars — playable solo, no multiplayer required. Shares Action and Strategy with Bacteria Wars.
Hell Of War is a Real-Time Command Action (RTCA) game where you command the operation from a command drone, coordinate infantry, armored vehicles, combat drones, and artillery, then seamlessly take direct control of units to personally intervene in the battle.
- 6

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.
- 7

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.
- 8

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.