Steam

Unstable Nuclear Reactor

Also known as Unstable Nuclear Reactor, steam:4644400, unr

An incremental hex-puzzle roguelite game where merging atomic elements prevents a nuclear meltdown.

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Last update

26 Jun 2026

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Latest update

EventPublished 5d ago

☢️ DEMO IS OUT NOW! Play Unstable Nuclear Reactor 🚀

🚀 I’m thrilled to announce that the demo for my game is now live! 💫 For the past 5 months, I’ve been developing this project completely solo. Throughout development, I conducted extensive playtesting with over 500 pla…

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2updates

June 2026
Hello Atoms! I have some massive news to share with you all today. The official Unstable Nuclear Reactor Demo has officially cleared Steam's review process and is completely approved for release! All three green lights…3 changesGameplayWorkshopPatch notes8d ago

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