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
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?
- 2
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.
- 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. Shares Strategy with Plasma Dome.
Von Neumann Project is a space based RTS where you build, mine, and expand across the universe in an attempt to find your creator's equals. Play across 4 different sectors with 28 handcrafted missions, with each sector introducing unique enemies, buildings, and missions.
- 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
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.
- 7
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.
- 8
Parallax Blue
Single-player alternative to Plasma Dome — playable solo, no multiplayer required. Shares Strategy with Plasma Dome.
A strategy tower defence where you create the towers! Gather resources, build towers, defeat bugs, and survive. Unlock new weapons, create towers, gather resources, and die. Don't fall short of the Company's expectations... these resources are worth more than any life, including yours.