Single-player games like Plasma Dome
Below are 8 single-player Steam games similar to Plasma Dome, 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 Plasma Dome page.
Ranked picks
- 1
Axom: Conquest
Single-player alternative to Plasma Dome — playable solo, no multiplayer required. Shares Strategy with Plasma Dome.
Build and defend your fortress while expanding out in this hold-out tower defense roguelite. Battle across a procedural alien homeworld, fight back corrupted terrain, discover hundreds of structures and upgrades as physics-driven swarms threaten to wipe out humanity.
- 2
Biletide
Single-player alternative to Plasma Dome — playable solo, no multiplayer required. Shares Strategy with Plasma Dome.
An atmospheric tower-defence strategy game about holding back an oozing toxic Tide. A distant mining colony has awakened a living flood that seeps from breaches in the ground. Dig for resources, raise defensive terrain, and burn your way to seal the breaches. Can you survive the Biletide?
- 3
Don't Mind the Robots
Single-player alternative to Plasma Dome — playable solo, no multiplayer required. Shares Strategy with Plasma Dome.
Build deadly mazes and outsmart a rogue AI in this strategic tower defense game. Adapt your defenses, use aiming parameters to your advantage, and activate powerful perks to survive increasingly complex waves of incoming robots.
- 4
Von Neumann Project
Single-player alternative to Plasma Dome — playable solo, no multiplayer required.
Von Neumann Project is about a self replicating probe as it charts the galaxies, peacefully of course. Mine, build, expand, and explore in this sci-fi RTS. Remember to have as little impact on your surroundings as possible and protect yourself at all costs.
- 5
Rogue Realm: Guardian Grids
Single-player alternative to Plasma Dome — playable solo, no multiplayer required. Shares Strategy with Plasma Dome.
Rogue Realm: Guardian Grids is a medieval fantasy blend of tower defense and roguelike progression. Build defenses on a grid, manage resources, and survive ever-evolving enemies.
- 6
The Factory Must Fall
Single-player alternative to Plasma Dome — playable solo, no multiplayer required. Shares Strategy with Plasma Dome.
Build the perfect factory, then let it go to war against other players! Draft buildings from a randomized shop, optimize resource allocation and army composition, then watch your factory crush your friends and foes in this PvP factory-builder.
- 7
TechGuardian: Territory Defense
Single-player alternative to Plasma Dome — playable solo, no multiplayer required. Shares Strategy with Plasma Dome.
This is a sci-fi strategy game featuring a Defense Mode focused on tower defense and an Attack Mode focused on combat. The game includes over 30 different buildings and units, all of which can be upgraded through entry editing to enhance their performance and firepower.
- 8
Poker Defense
Single-player alternative to Plasma Dome — playable solo, no multiplayer required. Shares Strategy with Plasma Dome.
Build your defenses with the towers you earn from playing cards and use your power ups to stop your enemies in this strategic card game tower defense!