Free games like Plasma Dome
Below are 8 free-to-play Steam games similar to Plasma Dome, ranked by player overlap and content similarity. No purchase or Steam login required to view the list. Every pick is a full free-to-play title — not a demo, trial, or time-limited giveaway. imho.run's catalogue refreshes daily, so newly free or newly popular titles surface here without manual editing.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Plasma Dome page.
Ranked picks
- 1
Outpath: First Journey
Free-to-play alternative to Plasma Dome — no purchase or trial window.
Outpath: First Journey is a prologue chapter of the main game, Outpath. An experimental clicker base building game. Craft, gather & manage resources, build your base and buy more islands to exploit and expand!
- 2
Die in the Dungeon: Origins
Free-to-play alternative to Plasma Dome — no purchase or trial window. Shares Strategy with Plasma Dome.
Fight your way through a mysterious dungeon in this deck-building, turn-based roguelike game where you don't use cards, but DICE! Deal with enemies by combining dice on your board, boost their effects with magical relics, and discover the story behind Die in the Dungeon!
- 3
The Riftbreaker: Prologue
Free-to-play alternative to Plasma Dome — no purchase or trial window. Shares Strategy with Plasma Dome.
The Riftbreaker: Prologue allows you to experience the events taking place before the story campaign of the main game. Explore an entirely new world. Gather resources. Build up a base. Defend yourself from thousands of alien creatures.
- 4
Limbus Company
Free-to-play alternative to Plasma Dome — no purchase or trial window.
As the Executive Manager of Limbus Company, lead your group of twelve Sinners, venture into the buried facilities of Lobotomy Corporation, and lay claim on the Golden Boughs.
- 5
Fallout Shelter
Free-to-play alternative to Plasma Dome — no purchase or trial window.
Fallout Shelter puts you in control of a state-of-the-art underground Vault from Vault-Tec. Build the perfect Vault, keep your Dwellers happy, and protect them from the dangers of the Wasteland.
- 6
Minion Masters
Free-to-play alternative to Plasma Dome — no purchase or trial window. Shares Strategy with Plasma Dome.
An addictive fast-paced hybrid of Card games & Tower-Defense. Play 1v1 - or bring a friend for 2v2 - and engage in epic online multiplayer battles full of innovative strategy and awesome plays! Collect 200+ cards with unique mechanics, all free!
- 7
Bloons TD Battles
Free-to-play alternative to Plasma Dome — no purchase or trial window. Shares Strategy with Plasma Dome.
Go head to head with other players in a Bloon-popping battle for victory. From the creators of best-selling Bloons TD 5, this all new Battles game is specially designed for multiplayer combat, featuring the ability to control bloons directly and send them charging past your opponent's defenses.
- 8
Age of Empires III: Definitive Edition
Free-to-play alternative to Plasma Dome — no purchase or trial window. Shares Strategy with Plasma Dome.
Age of Empires III: Definitive Edition offers players a trial of this historical single & multiplayer RTS experience. *Note: To unlock all features of the game please see the “Base Game” product.