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PCGAMESN - Ken Allsop
Jun 14, 2025
While Rimworld and Dwarf Fortress are the more common names you’ll hear mentioned in the colony sim space, Oxygen Not Included deserves similar respect. Developer Klei’s space base-building game boasts more than 120,000 player reviews with a 96% positive Steam score, and remains a pillar of the genre nearly six years after launch. Now, it’s just been given a lease of fresh life with the launch of a new ONI DLC, the Prehistoric Planet Pack, and there’s a hefty Steam sale discount on the base game if you’ve never tried it before, making now a perfect time to start.
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