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MasteryofCoolDevelopers

MasteryofCoolDevelopers #68044501

17
members (measured 27 Oct 2026, 15:53 UTC)
4 August 2025
created (per Roblox API)
10 August 2026
first measured by this register

Game studiosENdeveloper communitygroup rulescasual gaming

Description

hi welcome to Jack group this is a peaceful groups with no problems. We have a couple rules for rule breakers:Don’t abuse Commands,Don’t be toxic,don’t ask for private information,don’t pretend to be a Staff/Developer. Ty for reading this:D

Written by the group; not a statement by this register.

Membership history

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 We do not publish numbers we have not measured.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 members count we have recorded
Measured (UTC)MembersChange
18 Aug 2026, 03:5517first reading

Ownership

Owned by kiso (@Jacksonboy555892) as measured.

Groups seen changing owner — the largest ever handed over and the most recent — are on the ownership transfers board.

Members we’ve seen

kiso (@Jacksonboy555892) — 👑Creator👑 (rank 255)

@sttranooo — Member (rank 1)

FRANKIS252 (@frankis_591) — Member (rank 1)

theanklebreaker_kris (@kristijangg99) — Member (rank 1)

dlc_gioflappy (@GioGio83456) — Member (rank 1)

Ruka (@ONE_CONDITIONonly) — Member (rank 1)

Buttermilk (@liamsussy99942) — Member (rank 1)

A sample — only members this register has independently measured, highest rank first. Not the full roster.

Rank structure

👑Creator👑1
Admin1
Member17
Member15
Guest0

Roles and per-rank member counts as Roblox reports them (rank 0 = guest … 255 = owner).

Related groups

Groups whose measured members overlap with this one — a sample from our membership graph.

Open data

Download this group’s measured record — free to reuse with attribution: membership history (CSV) · full record (JSON)

Each file carries its licence and retrieval time inside it, and is generated from the same measurements shown above.