Chicago Development Studios V2 #109289750

members (measured 15 Oct 2026, 22:05 UTC)

15 July 2025

created (per Roblox API)

11 August 2026

first measured by this register

OtherEN

Description

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

Membership history

Growth

2 measurements spanning 21 days, net +1. Dots are measurements; the straight line between them is drawn to join them, not to claim we know the path taken in between — snapshots are recorded only when a count changes, so gaps mean “no change observed”, never “interpolated”. The vertical axis spans 11–12 and does not start at zero.

Measurement log — every members count we have recorded
Measured (UTC)	Members	Change
10 Sept 2026, 03:27	12	+1
20 Aug 2026, 05:55	11	first reading

Ownership

Owned by @groupsbackup as measured.

Changed hands 1 time

Transferred from user #4844661062 to user #11640551177 — observed between sweeps, detected 10 Sept 2026, 03:27 UTC

Detection dates bound when a change was seen by this register, not when it happened.

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

Members we’ve seen

CSX (@CSXzilla1) — Member (rank 1)

SpaceyMoxieRailfan (@Moxie_Pacific) — Member (rank 1)

@groupsbackup — 2 (rank 1)

alstom (@TheAlstomino_Guy) — 2 (rank 1)

WaterSpoutWCUE (@Metratrain100) — 2 (rank 1)

JustMike (@MGDtrain) — 2 (rank 1)

pan (@Downtownohio13) — 2 (rank 1)

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

Rank structure

Owner1

Member11

Member10

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.

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Car Crash Simulator Official Group#3338997 · 4 shared members

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Searchlite Studios#5089910 · 4 shared members

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Wiggity.#12836673 · 3 shared members

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LSPLASH#3049798 · 3 shared members

24,151,851

KizmoTek Studio#3115970 · 3 shared members

7,580,973

Pilot Training Club#2794513 · 3 shared members

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Minimal Games#12564376 · 3 shared members

2,199,539

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.