Free games like Domain Defense
Below are 8 free-to-play Steam games similar to Domain Defense, 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 Domain Defense page.
Ranked picks
- 1

The Expendabros
Free-to-play alternative to Domain Defense — no purchase or trial window. Shares Indie with Domain Defense.
The Expendabros have assembled and set their sights on the forces of ruthless arms dealer Conrad Stonebanks in the forests of Eastern Europe.
- 2

DYO
Free-to-play alternative to Domain Defense — no purchase or trial window. Shares Indie with Domain Defense.
DYO is a mind-bending cooperative platformer for one or two players where you can hop between two halves of a split screen.
- 3

Bloons TD Battles 2
Free-to-play alternative to Domain Defense — no purchase or trial window. Shares Strategy and Indie with Domain Defense.
From the creators of Bloons TD6... Bloons TD Battles 2 is a brand new installment of the top-rated head-to-head tower defense game. Gather your Hero, choose your team of powerful Monkey Towers, and prepare to battle one on one against other players and relentless waves of Bloons!
- 4

Bloons TD Battles
Free-to-play alternative to Domain Defense — no purchase or trial window. Shares Strategy with Domain Defense.
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.
- 5

Blackwake
Free-to-play alternative to Domain Defense — no purchase or trial window. Shares Strategy and Indie with Domain Defense.
Blackwake is a multiplayer naval FPS focused on teamwork and cooperation. Fire the cannons, sink enemy ships or board them with firearms and steel.
- 6

Goose Goose Duck
Free-to-play alternative to Domain Defense — no purchase or trial window. Shares Strategy and Indie with Domain Defense.
Goose Goose Duck is a game of social deduction for up to 16 players. Players are separated into different groups that are each assigned a different objective. Complete your team’s objective to win!
- 7

TrackMania Nations Forever
Free-to-play alternative to Domain Defense — no purchase or trial window.
A free game in the truest sense of the word, TrackMania Nations Forever lets you drive at mind-blowing speeds on fun and spectacular tracks in solo and multiplayer modes.TrackMania Nations Forever offers a new "Forever" version of the Stadium environment, a solid solo mode and 65 brand new, progressively challenging tracks.
- 8

Darwin Project
Free-to-play alternative to Domain Defense — no purchase or trial window. Shares Indie with Domain Defense.
In Darwin Project, ten inmates must survive the elements, track each other, fight, craft tools, and use their social skills to be the last one standing. It's a unique take on battle royale with a Show Director to influence the match and Spectator Interactions to create a one-of-a-kind game show.