[RB] Rainbow Reactor Facility Core

A Roblox experience owned by Rainbow Group Inc..

SimulatorENsimulationchernobylco-op

Description (written by the developer; not a statement by this register)

✨ Welcome to RB Builders reactor! 💀 Keep the core stable, or you will suffer the consequences... unless you escape! ⚠️ This game is WIP so expect some bugs and unfinished stuff E Also R15 Update is coming in! [R15 is back in!] [Also Added a core chamber entrance] This Game was inspired by: Innovation Inc. Thermal Power Plant The Night of the Disaster [CHERNOBYL] Quantum Science Energy Research Facility (and a bit like pumpkin's reactor core i think) We added a mainframe room! (There are codes in the mainframe so you can do a supernova)

Last updated by the developer 4 Aug 2022, 22:33 UTC.

playing (measured 28 Aug 2026, 14:38 UTC)

639

lifetime visits

9 July 2022

created (per Roblox)

Play on Roblox →

Live players over time

Growth

Growth history is still building. We hold one measurement for this entry. A trend needs at least two, taken days apart — so this will fill in on its own rather than being estimated. We do not publish numbers we have not measured.

Measurement log — every players count we have recorded
Measured (UTC)	Players	Change
28 Aug 2026, 14:38	0	first reading

Concurrent players at each of our measurements (insert-on-change).