Free games like Terraforming Mars
Below are 8 free-to-play Steam games similar to Terraforming Mars, 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 Terraforming Mars page.
Ranked picks
- 1
Card Hunter
Free-to-play alternative to Terraforming Mars — no purchase or trial window. Shares Strategy with Terraforming Mars.
Shuffle your cards and ready your dice - Card Hunter is a fresh new card gaming spin on classic tabletop RPGs. Battle your way through a massive campaign solo or with friends and compete with other players in ranked play and tournaments.
- 2
KARDS - The WW2 Card Game
Free-to-play alternative to Terraforming Mars — no purchase or trial window. Shares Strategy with Terraforming Mars.
KARDS, The World War II Card Game, combines traditional CCG gameplay with innovative mechanics inspired by classic strategy games and real battlefield tactics. Take command and challenge other players in grand-scale warfare on the ground, air, or seas.
- 3
Dominion
Free-to-play alternative to Terraforming Mars — no purchase or trial window. Shares Strategy with Terraforming Mars.
Expand a small kingdom to a mighty Dominion! Play the Spiel des Jahres winning boardgame beloved by millions around the world. Discover the game that defined a genre, Dominion was first to popularize deck-building and remains a staple of tabletop. This is the officially licensed implementation.
- 4
Age of Conquest IV
Free-to-play alternative to Terraforming Mars — no purchase or trial window. Shares Strategy with Terraforming Mars.
Age of Conquest is a turn-based grand strategy wargame.
- 5
Battle for Wesnoth
Free-to-play alternative to Terraforming Mars — no purchase or trial window. Shares Strategy with Terraforming Mars.
The Battle for Wesnoth is an open source, turn-based strategy game with a high fantasy theme. Explore the four corners of Irdya in seventeen solo campaigns and dozens of multiplayer maps, taking part in countless adventures as you go.
- 6
Cards & Tankards
Free-to-play alternative to Terraforming Mars — no purchase or trial window. Shares Strategy with Terraforming Mars.
Grab a drink, invite your friends and ready your deck! Cards & Tankards is the first social collectible card game available for both PC and VR.
- 7
Star Realms
Free-to-play alternative to Terraforming Mars — no purchase or trial window. Shares Strategy with Terraforming Mars.
Star Realms is a hugely popular space combat deckbuilding game. Download and play today (note: base set is required to play online) to find out why Star Realms is the winner of SXSW 2014 Board Game of the Year, 7 Golden Geek Awards from BoardGameGeek, and 2 Dice Tower awards!
- 8
SOVL: Fantasy Warfare
Free-to-play alternative to Terraforming Mars — no purchase or trial window. Shares Strategy with Terraforming Mars.
SOVL is a ruleset for playing fantasy wargames. It can be played with miniatures on a table or digitally on Steam.