1 store · cheapest $9.99 · source CheapShark
This is the lowest price ever recorded for it.
All-time low $9.99 on Sep 15, 2026 · source cheapshark
Not enough observations yet. History starts the first time we see this game and grows from there — we never back-fill a price we did not record.
Concurrent Steam players · sampled just now
Playing now
135
24h peak
135
7d peak
135
Player history builds up as we sample Steam. Check back once a few hours of data exist.
Official Steam announcements for this game
Hotfix 9/27/26
Proton shader issues fixed, game works now Missing buttons UI bug fixed
4d ago
Update "Hydrogen" 09/26/26
Update "Hydrogen" is out! We recently hit 10k players! Thank you all for the support and feedback once again. We could not have done this without you all. You told us the old interface was hard to use, so we rebuilt it from the ground up. Changelog: Physics De...
4d ago
Experimental LID/Sparkplug branch is out
Please test your LID designs and have fun! Right-click Nuclear Design Bureau in your Steam Library → Properties → Game Versions & Betas → select the experimental "sparkplug" branch, then update your game
9d ago
Design. Simulate. Detonate. As a junior engineer at the Kurchatov Institute, you design atomic devices to satisfy the demands of the State. A hardcore physics game simulating hydrodynamics, neutron transport, and thermonuclear fusion.
