Free games like Galactic Civilizations III
Below are 8 free-to-play Steam games similar to Galactic Civilizations III, 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 Galactic Civilizations III page.
Ranked picks
- 1
The Lab
Free-to-play alternative to Galactic Civilizations III — no purchase or trial window.
Welcome to The Lab, a compilation of Valve’s room-scale VR experiments set in a pocket universe within Aperture Science. Fix a robot, defend a castle, adopt a mechanical dog, and more. Still not sold? It’s free!
- 2
Landfall Archives
Free-to-play alternative to Galactic Civilizations III — no purchase or trial window. Shares Strategy with Galactic Civilizations III.
Break into the Landfall Archives to steal and play previously unreleased games, demos, interactive slide shows, and even an unreleased version of Totally Accurate Battle Simulator from 2017!
- 3
Die in the Dungeon: Origins
Free-to-play alternative to Galactic Civilizations III — no purchase or trial window. Shares Strategy with Galactic Civilizations III.
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!
- 4
South Scrimshaw, Part One
Free-to-play alternative to Galactic Civilizations III — no purchase or trial window.
South Scrimshaw is the story of a newborn whale in a vast alien ocean. It is a richly illustrated experimental visual novel, written in the style of a nature documentary.
- 5
The Riftbreaker: Prologue
Free-to-play alternative to Galactic Civilizations III — no purchase or trial window. Shares Strategy with Galactic Civilizations III.
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.
- 6
SCP – Containment Breach
Free-to-play alternative to Galactic Civilizations III — no purchase or trial window.
A procedural first-person horror adventure. You are on your own after something goes terribly wrong in this top-secret containment facility. Collect items to aid in your escape and try to uncover the truth, as horror lurks behind every door. Can you make it out alive?
- 7
Counter-Strike 2
Free-to-play alternative to Galactic Civilizations III — no purchase or trial window.
For over two decades, Counter-Strike has offered an elite competitive experience, one shaped by millions of players from across the globe. And now the next chapter in the CS story is about to begin. This is Counter-Strike 2.
- 8
Tom Clancy's Rainbow Six Siege
Free-to-play alternative to Galactic Civilizations III — no purchase or trial window.
Rainbow Six® Siege is the reference in tactical team shooters, where elite strategy and execution triumph. Enjoy free access to Quick Match, Unranked, and Dual Front game modes with a selection of operators.