Working Untitled Fusion Reactor Codes
Last updated August 21, 2026
No working codes right now
We're tracking Untitled Fusion Reactor and will list codes here the moment the developers release them. If you spot one first, send it our way below.
How to redeem codes in Untitled Fusion Reactor
- Launch Untitled Fusion Reactor on Roblox.
- Look for a Codes, Shop or settings button — usually on the side of the screen.
- Paste the code exactly as shown above. Codes are case-sensitive.
- Press redeem to claim your reward.
Codes expire without warning — if one fails, it was almost certainly pulled by the developer.
Found a code we're missing?
Submit it and we'll verify it before it goes live.
About Untitled Fusion Reactor
Welcome to Untitled Fusion Reactor, a game currently in development about managing a fusion reactor/core Latest Update: v0.4 -Giant Map Update! -Deuterium Production Room -Lithium Storage Room -Condensers -Generators -New Core Entrance Room -Locker/Hazmat Suit Room -Boiler Room -Helium Storage Room Latest Sub-Updates: v0.4.6 - Minor Graphical Update - Elevator & GUI Bug Fixes v0.4.5 Elevator Bug Fixes Control room model updates UI update Player hints added In-game Currency added Reactor model changed v0.4.4 -Increased keypad size for mobile users -Added tutorial menu -Fixed stuck reactor temperature bugs -Fixed non-updating screens in control room v0.4.3 -Added a NPC for power instructions -Fixed hallway model errors -Added Fuel Mixing room -Added additional control room indicators -Moved some controls to their respective rooms Tags: core, reactor, core game, reactor game, meltdown, fusion