Single-player games like Biodome Bastion
Below are 8 single-player Steam games similar to Biodome Bastion, 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 Biodome Bastion page.
Ranked picks
- 1
Remnant Afterglow Tower Defense
Single-player alternative to Biodome Bastion — playable solo, no multiplayer required. Shares Strategy and Simulation with Biodome Bastion.
This is a creative and challenging real-time strategy tower defense game where players need to constantly expand, build complex battle lines on the map, and fight against groups of enemies. The game has unique rules and beautiful pixel style, with each level filled with tense and exciting battles.
- 2
Stronghold 4
Single-player alternative to Biodome Bastion — playable solo, no multiplayer required. Shares Strategy and Simulation with Biodome Bastion.
Wood needed! Return to the green roots of Stronghold in this narrative prequel to the original 'castle sim'. Immerse yourself in a cinematic campaign, hone your siegecraft with new mechanics in skirmish mode and customise your castles with a wide selection of castle pieces and cosmetics.
- 3
Knightly Gnomes
Single-player alternative to Biodome Bastion — playable solo, no multiplayer required. Shares Strategy and Simulation with Biodome Bastion.
Knightly Gnomes is a Top-Down Strategy game where you choose to play as either the leader of the Knights or Gnomes and control troops in order to fight the enemy faction.
- 4
Wonder Defense: Chapter Earth
Single-player alternative to Biodome Bastion — playable solo, no multiplayer required. Shares Strategy and Indie with Biodome Bastion.
Wonder Defense: Chapter Earth is a strategy game based on Earth and Aliens in which you act as a General to accomplish survive and move to Mars.
- 5
Ironholm: Reign of the Isles
Single-player alternative to Biodome Bastion — playable solo, no multiplayer required. Shares Strategy and Indie with Biodome Bastion.
Ironholm: Reign of the Isles is a real-time strategy game about conquering medieval islands. Grow your kingdom, raise armies, capture regions, and command entire forces. Plan your expansion, reinforce key positions, and choose the right moment to strike.
- 6
Swarming Planet
Single-player alternative to Biodome Bastion — playable solo, no multiplayer required. Shares Strategy with Biodome Bastion.
Build towers and learn abilities to defend against swarms of hundreds of on-screen hostile alien creatures. Choose between sets of randomized upgrades that both upgrade you and the alien swarm. From enormous explosions to far-reaching flamethrowers, no two games are the same.
- 7
The Last Buffet
Single-player alternative to Biodome Bastion — playable solo, no multiplayer required. Shares Strategy and Indie with Biodome Bastion.
Turn foods into defensive towers and stop waves of bacteria from invading the stomach. Plan your placements, combine your towers, and build the perfect defense in this quirky tower defense game.
- 8
Creeper World 4
Single-player alternative to Biodome Bastion — playable solo, no multiplayer required. Shares Strategy and Indie with Biodome Bastion.
The unstoppable fluid enemy has returned and destroyed every world in its path! Defend against Creeper as it floods across the 3D terrain in this real time strategy game where the enemy is a fluid.