Free games like Planet Colonization
Below are 8 free-to-play Steam games similar to Planet Colonization, 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 Planet Colonization page.
Ranked picks
- 1
The Riftbreaker: Prologue
Free-to-play alternative to Planet Colonization — no purchase or trial window. Shares Strategy with Planet Colonization.
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.
- 2
The Last Sovereign
Free-to-play alternative to Planet Colonization — no purchase or trial window. Shares Strategy with Planet Colonization.
Explore a world torn between armies of lust and purity in which everything is more complex than it seems, deciding the fate of nations through might, politics, and finance. Every decision matters in an intricate saga that tracks thousands of variables.
- 3
Crusader Kings II
Free-to-play alternative to Planet Colonization — no purchase or trial window. Shares Strategy with Planet Colonization.
Explore one of the defining periods in world history in an experience crafted by the masters of Grand Strategy.
- 4
Supermarket Together
Free-to-play alternative to Planet Colonization — no purchase or trial window.
The multiplayer supermarket has arrived to your neighbourhood for free! Stock your shop space, unlock perks and franchises, hire employees or chase those pesky shoplifters. The more players, the more action!
- 5
Fallout Shelter
Free-to-play alternative to Planet Colonization — 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
Cell to Singularity - Evolution Never Ends
Free-to-play alternative to Planet Colonization — no purchase or trial window.
The epic story of evolution, technology, humanity, and dinosaurs is yours to tap.
- 7
War Selection
Free-to-play alternative to Planet Colonization — no purchase or trial window. Shares Strategy with Planet Colonization.
War Selection is a compelling RTS game featuring base building, resource extraction and warfare. Evolve from a stone age tribe to a distinct industrial nation with unique game mechanics and battle for supremacy with dozens of players on a unique procedurally generated map.
- 8
Endless Sky
Free-to-play alternative to Planet Colonization — no purchase or trial window.
Endless Sky is a 2D space trading and combat game inspired by the classic Escape Velocity series. Work your way up from a relatively wimpy shuttle, cargo ship, or fighter, to a highly upgraded and customized flagship or to a massive fleet of warships or freighters.