Where to buy
1 store · cheapest $0.99 · source CheapShark
Its record low was $0.49 in April 2026 — $0.50 below today's best price.
Price history
All-time low $0.49 on Apr 12, 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.
Players
Concurrent Steam players · sampled just now
Playing now
0
24h peak
0
7d peak
0
From the developer
Official Steam announcements for this game
Radium Lux is now available on Steam!
https://store.steampowered.com/app/2012600/Radium_Lux/
2y ago
Ra² is now available on Steam!
http://store.steampowered.com/app/562460
10y ago
Ra² is now on Steam Greenlight!
Hey internet people. I'm working on a new Radium which is now available on Steam Greenlight and I need your help. Ra² includes a better level design, Steam-Leaderboard, portals, rotating levels and more! http://steamcommunity.com/sharedfiles/filedetails/?id=77...
10y ago
About
Radium is a minimalist and physics-based skill game, featuring unique game controls.