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Unstable Nuclear ReactorNews☢️ DEMO IS OUT NOW! Play Unstable Nuclear Reactor 🚀
Steam news

☢️ DEMO IS OUT NOW! Play Unstable Nuclear Reactor 🚀

Unstable Nuclear Reactor · published 22 Jun 2026, 18:43 UTC

All newsPlayers around this dateRead on Steam

🚀 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 players across itch and various WebGL platforms to refine the gameplay experience.

Demo Features

  • ⚛️ Orbital Survival Mode – A unique 7-ring orbital challenge where you must manage steadily decaying reactor energy.
  • ⬡ Survival Mode (Hexagon) – A classic 7-ring hexagonal grid focused on long-term strategy and endurance.
  • 🌿 Relax Mode (Hexagon) – A pressure-free experience with no energy drain or time constraints.
  • ⏱️ Estimated playtime: 60–120 minutes of strategic puzzle-solving and reactor management.

I'd love to hear your feedback and see how long you can keep the reactor stable! ☢️🔥

🚀 A Huge Thank You!

We recently crossed 390+ wishlists, which is an incredible milestone for this solo developer journey. Your support, clicks, and hype keep this reactor running!


If you haven't yet, please hit that Wishlist button and share the game with your favorite puzzle and strategy game friends, it helps the Steam algorithm more than you know!

More from Unstable Nuclear Reactor

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Community19 Jun 2026Unstable Nuclear Reactor Demo Launches June 22! ⚛️🎉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 are lit, and the countdown has officially begun. 📅 Official Demo Release Date: Monday, June 22, 2026 🔬 Features Included in the Demo: · Combo Chain Reactions: The baseline puzz…