Operation Yellow
CHD Development Studio
Studio group
Playing right now
Between 3 and 33 over the last 24 hours.
Power-ups
All-time numbers from the game's Roblox page.
19.3M
Since it opened on 7 Jun 2025.
410.2K
Players who saved it.
90%
57.9K likes, 6,507 dislikes.
14
Players per server, one stud each.
Hour by hour
The most players at once in each hour. We started counting on 9 Nov at 04:00 UTC, so this covers the 6 hours since.
Biggest hour so far: 33 players at 04:00 UTC on 9 Nov.
Screens
From the game's store page.
Patch notes
Each publish we saw, and how many players were in the hour before and after.
- 7 Jun 2025Opened
- 3 Nov 2026Last publish
- 9 Nov 2026We started counting
No patches yet. Operation Yellow hasn't published an update since we started counting on 9 Nov.
About the game
In CHD Development Studio's words.
Chapter Two is now released! Like for chapter 3! 🧪 Deep beneath the Schell Creek mines, a hidden facility tried to weaponize fear with a hallucinogenic yellow gas. It was meant to harden soldiers. Instead, it shattered minds, twisted creatures into horrific killers, and locked the lab in emergency shutdown.
- World
- Survival
- Kind
- Escape
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Is Operation Yellow yours? See inside it, live.
This page is what anyone can see. Studwise for developers shows the rest as it happens: every server and every player, where they quit and how each update landed.