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Stellar Settlers: Space Base Builder is a space base building and colony simulation game developed by Tinymice Entertainment and published by Rogue Duck Interactive and Gamersky Games. It released on Steam on February 22, 2025 for Windows, macOS and Linux.
Each planet is procedurally generated with its own ores, special events, settlers and building pods. You connect base pods both horizontally and vertically, balancing function, durability and cost, while the environment and planet-specific disasters work against your colony. Once your base is stable, you design and build a physics-based spaceship, in a style the developer compares to Kerbal Space Program, and launch it to escape when conditions turn harsh. New settlers with different talents and perks unlock as you progress.
Five game modes let you tune the experience, from a calm mode with no negative events to unlimited resources for ship experiments. A Stellar Settlers: Space Base Builder CD key suits players who like low-pressure builders with a survival edge. For a deeper Mars colony sim, compare Surviving Mars. Full details are on the official Steam store page.
Steam (Windows / macOS / Linux): In the Steam client, go to Games > Activate a Product on Steam and enter your key. Follow our step-by-step Steam redemption guide if you need help.
Region check: Make sure the key is valid in your country before purchase. Our article on region-locked game keys explains what to look for.
Vertical and Horizontal Building: Connect base pods in both directions, each with its own function, durability and cost.
Hostile Alien Planets: Every planet brings its own environment and disaster mechanics that call for a different strategy.
Procedural Worlds: Planets are procedurally generated with different ores, special events, settlers and building pods.
Physics-Based Spaceships: Design and launch your own ship to escape a planet when conditions become too dangerous.
Talented Settlers: Unlock settlers with different talents and perks and choose who joins each expedition.
Five Game Modes: Pick a calm mode without negative events, unlimited resources or other rule sets to match your play style.
Multi-Platform and Multi-Language: Runs on Windows, macOS and Linux with full controller support and 13 supported languages.
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