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Games / Calvert Cliffs Mountainside Research Facility
Calvert Cliffs Mountainside Research Facility icon

Calvert Cliffs Mountainside Research Facility — Live Player Count & Stats

☢️ Set in 2052, step inside a premier research facility to operate, secure, or infiltrate a experimental nuclear reactor. 🔫 Defend the facility against hostile Raiders, or join their ranks to take control! 💣 Trigger a catastrophic nuclear meltdown and force a full evacuation of Maryland! The PNIFR-04, an experimental core prototype created by Richard Halska and Dr. Chad Thomas, was engineered to power all of New York City, until a devastating disaster altered its purpose. Note: In order to join Security, join communications and our security group, located in our group's affiliates. ❗ Please review our combat rules before playing: https://devforum.roblox.com/t/4778018 🔧 Credits and attributions: https://devforum.roblox.com/t/4884596 Takes place in Calvert Cliffs, Maryland, USA. Not affiliated with Calvert Cliffs Nuclear Power Station. Player data may be stored for moderation purposes.

1 playing nowGenre: RPGOpen on Roblox ↗
Publishing communityNediah
Live players
1
Peak (24h)
1
Total visits
153.5K
Est. monthly revenue
$4–$18
Estimate (beta)
Player rating
71.7%
4.2K favorites
552 likes218 dislikes
Access
Free

Open to everyone

24-hour trend
—

View activity details →

Created on Roblox
Dec 30, 2023

Original publication date

Latest Roblox update
Nov 13, 2026

As reported by Roblox

Activity over time

Concurrent players

Not enough history yet — check back soon.

Notable change activity

Thumbnail, name, description, and access-price changes only.

No notable changes in 24 hours.

Notable changes

No competitor-level changes tracked yet — SpawnRadar logs every thumbnail, name, price, and description change as it happens.

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SpawnRadarSpawnRadar

Competitor intelligence for Roblox studios. Look up any game's live players and revenue — and get alerted the moment a rival changes anything.

Explore
  • Top games
  • Live player count
  • Genres
  • Communities
  • Creators
  • Charts
  • All-time records
  • Weekly report
  • Pricing
Free tools
  • Roblox calculators
  • Robux to USD
  • DevEx calculator
  • Roblox tax calculator
  • API & MCP
  • Methodology
Account
  • Dashboard
  • Alerts
  • Breakout radar
  • Log in

SpawnRadar is not affiliated with, endorsed, sponsored, or approved by Roblox Corporation. "Roblox" and "Robux" are trademarks of Roblox Corporation.

Publishing communityNediah

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