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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