Unstable Nuclear Reactor

Description

--- NEW UPDATES: 11 JUNE 2026 ---

After five months of solo development, the official Unstable Nuclear Reactor free demo is finally live (Supports 13 languages).

Unstable Nuclear Reactor is an incremental hex-puzzle roguelite where you merge atomic elements to prevent a nuclear meltdown.

Merge atoms into higher elements through standard merges or massive chain combos. Earn radioactive coins to unlock powerful upgrades, expand your reactor with new rings, and carefully manage your limited capacity to keep the reactor working.

WISHLIST ON STEAM: https://store.steampowered.com/app/4644400/Unstable_Nuclear_Reactor/
DISCORD: https://discord.gg/7DUx9zTanf
PRESS KIT: https://drive.google.com/drive/folders/1WFBRkRjWsdcyGdlISMvo4NoiRm5HnEBs?usp=sharing

Demo Play Modes:

• Orbital Survival Mode: A unique 7-ring orbital challenge where reactor energy steadily decays.
• Survival Mode (Hexagon): A classic 7-ring hexagonal layout focused on long-term strategy and endurance.
• Relax Mode (Hexagon): A stress-free experience with no energy drain or time pressure.

P.S. For content creators and streamers: It would be an honor to see Unstable Nuclear Reactor featured in one of your videos or livestreams. Feel free to reach out, and all promotional assets are available in the press kit above.

Controls

Just use the left mouse button to click, and the scroll wheel to zoom in and out.