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

Star Realms
Free-to-play alternative to Gaia Project — no purchase or trial window. Shares Strategy with Gaia Project.
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!
- 2

Dominion
Free-to-play alternative to Gaia Project — no purchase or trial window. Shares Strategy with Gaia Project.
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.
- 3

KARDS - The WW2 Card Game
Free-to-play alternative to Gaia Project — no purchase or trial window. Shares Strategy and Indie with Gaia Project.
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.
- 4

Unnamed Space Idle
Free-to-play alternative to Gaia Project — no purchase or trial window. Shares Casual with Gaia Project.
Destroy endless waves of alien ships that have all but wiped out humanity in this long form, unfolding, sci-fi idle game. Customize your ship with different weapons and defenses to defeat specific enemy types and utilize a ton of different systems to increase your overall power.
- 5

Age of Conquest IV
Free-to-play alternative to Gaia Project — no purchase or trial window. Shares Strategy and Indie with Gaia Project.
Age of Conquest is a turn-based grand strategy wargame.
- 6

SOVL: Fantasy Warfare
Free-to-play alternative to Gaia Project — no purchase or trial window. Shares Strategy and Indie with Gaia Project.
SOVL is a ruleset for playing fantasy wargames. It can be played with miniatures on a table or digitally on Steam.
- 7

FPS Chess
Free-to-play alternative to Gaia Project — no purchase or trial window. Shares Strategy and Casual with Gaia Project.
Battle a friend in this fast paced 1v1 class-based first-person shooter. Chess takes a back-seat to FPS as you win duel after duel and capture the opponent's pieces until you've beaten their king and won the game.
- 8

Puzzle Together Multiplayer Jigsaw Puzzles
Free-to-play alternative to Gaia Project — no purchase or trial window. Shares Indie and Casual with Gaia Project.
Multiplayer jigsaw puzzles with voice chat! Play on your own or with friends, and feel like you're all sitting around the same table. Millions of puzzle images, upload your own, or create any puzzle you can imagine just by describing it!