Life & fun · alternatives · 2026

24 alternatives to Mars Colonies

A free old-school RTS... on Mars

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Mars Colonies launched in 2015; newer entries below may have overtaken it.

1. 1OR
   OpenRA – RTS project that recreates Command and Conquer games▲131

   2014 · openra.res0l.net · its alternatives →

2. 2
   Jamestown▲71

   A four player co-op adventure on British Colonial Mars

   2015 · its alternatives →

3. 3CG
   Corsair Game – Minecraft Meets the Martian in Space▲54

   2016 · corsair-game.net · its alternatives →

4. 4
   SimpleRockets▲54

   A sandbox space experience 🚀

   2015 · its alternatives →

5. 5
   Galaxy Alliance▲56

   Find another habitable planet and rebuild your nation

   2015 · its alternatives →

6. 6
   Astroneer▲98

   A game of aerospace industry and interplanetary exploration

   2015 · its alternatives →

7. 7
   NeoWars▲58

   3D node-based RTS with great tactical gameplay

   2016 · its alternatives →

8. 8
   Star Command Galaxies▲60

   The open world (galaxy?) version of a really great iOS game!

   2015 · its alternatives →

9. 9
   Run an Empire▲64

   The Real-World Territory Control Game

   2014 · its alternatives →

10. 10
    Expeditions: Viking▲69

    Historical turn-based tactical RPG

    2017 · its alternatives →

11. 11
    Element▲78

    A space RTS for people who don't have time for a normal RTS

    2016 · its alternatives →

12. 12IC
    I created a Mars colony RPG based on Kim Stanley Robinson’s Mars books▲307

    I built a desktop Mars colony survival game called Underhill, in homage to Kim Stanley Robinson's Mars trilogy. Land on Mars, build solar panels and greenhouses, and try not to pass out during dust storms. Eventually your colonists split into factions: Greens who want to terraform and Reds who want to preserve Mars. There’s Chill Mode for players that just want to build & hang, and Conflict Mode that introduces the Red v. Green factions. Reds sabotage, the terrain slowly turns green as the world gets more terraformed. Feedback welcome, especially on performance and gameplay!

    Feb 2026 · underhillgame.com · its alternatives →

13. 13
    Wings.io▲73

    Another fast paced multiplayer game

    2016 · its alternatives →

14. 14
    FreeCol▲63

    Open source 4X game inspired by Colonisation

    2015 · its alternatives →

15. 15
    Space Grub▲79

    Simple and fun space shooter

    2017 · its alternatives →

16. 16
    Martian Transporter▲58

    A space truck driving strategy game

    2016 · its alternatives →

17. 17
    Vanar.io▲70

    Agar.io goes interstellar!

    2015 · its alternatives →

18. 18
    ION▲57

    A physics and biology based space exploration game

    2015 · its alternatives →

19. 19
    FreeCiv▲68

    Open source empire-building game inspired by Civilization

    2015 · its alternatives →

20. 20
    Open Red Alert▲78

    Free RTS game that recreates the classic Command & Conquer

    2015 · its alternatives →

21. 21
    TerraTech▲63

    The ultimate vehicle construction and combat game.

    2015 · its alternatives →

22. 22
    Tharsis▲66

    A turn-based space strategy game.

    2016 · its alternatives →

23. 23
    Dawn of Steel▲62

    Mechanized RTS warfare and a race for dominance!

    2015 · its alternatives →

24. 24
    Jupiter Hell▲54

    A modern turn-based sci-fi roguelike

    2016 · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →