![Fusion Research Institute [Legacy]](https://tr.rbxcdn.com/180DAY-71d8b483e3b7fb4b1027609f58d6a1c0/256/256/Image/Png/noFilter)
Fusion Research Institute [Legacy]
A Roblox experience owned by Prismatic Corporation.
SimulatorENsciencesimulationlegacy
Description (written by the developer; not a statement by this register)
This version of PFRI has been discontinued; it will no longer receive any more updates. For continued updates, play PFRI Internal: https://www.roblox.com/games/9165821457 Welcome to PFRI! Located in Tasmania, Australia lies the Proton Reactor Mark 2. Just like with every other core game you can melt it down. It's a pretty simple concept. Pre-Beta v1.0 - The Expansion Update I ( Released 8/5/22 ) Intro song: J+1 - Somewhere [ GRAPHICS 5+ RECOMMENDED ] [ JOIN REQUIREMENTS: None ]
Last updated by the developer 9 Aug 2026, 19:40 UTC.
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 We do not publish numbers we have not measured.
| Measured (UTC) | Players | Change |
|---|---|---|
| 11 Aug 2026, 02:30 | 0 | first reading |
Concurrent players at each of our measurements (insert-on-change).
Badge funnel
How many players have ever earned each badge — a proxy for how far players get before they stop. Steep drop-offs mark where a game loses people. Win rate is the past-day share of players who earned it; categories are assigned by a language model from each badge’s own name and description.