SDI Studios #4960504

693

members (measured 21 Aug 2026, 07:22 UTC)

3 June 2019

created (per Roblox API)

10 August 2026

first measured by this register

Game studiosENgame developmenttycoon gamesroleplay games

Description

SDI Studios, established 2019. Creator of Ridgeway County & Coal Mine Tycoon.

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

Membership history

Growth

3 measurements spanning 10 days, net +3. 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 690–693 and does not start at zero.

Measurement log — every members count we have recorded
Measured (UTC)	Members	Change
20 Aug 2026, 05:59	693	+1
17 Aug 2026, 17:36	692	+2
10 Aug 2026, 16:18	690	first reading

Ownership

Owned by Square (@Squareheaddude) as measured.

Experiences

0

players in this group’s experiences right now

139,811

lifetime visits across 1 experiences

[DRIVE TRAINS] Coal Mine Tycoon0 playing now

Experiences this group owns, by lifetime visits. Live-player counts are from our last measurement.

Members we’ve seen

Square (@Squareheaddude) — Lead (rank 255)

syntax (@syntaxsyntaxsyntax) — Project Manager (rank 15)

@pauljkl — Project Manager (rank 15)

@billydurm — Contractor (rank 11)

sourced (@v_masuka) — Contractor (rank 11)

Tal (@TaIaxn) — Contractor (rank 11)

@0x_7777 — Quality Assurance (rank 10)

@bommes — Quality Assurance (rank 10)

Cephal (@CephalGPT) — Quality Assurance (rank 10)

@ColonelCarm — Quality Assurance (rank 10)

abby (@ab_bae) — Quality Assurance (rank 10)

@largeTitanic2 — Quality Assurance (rank 10)

Artie (@roblox_user_3778666120) — Fans (rank 5)

Peace (@Peacedownload) — Fans (rank 5)

Dior (@23kdoll_dior) — Fans (rank 5)

Key (@robloxwolf123) — Fans (rank 5)

@SquareheaddudeAlt — Fans (rank 5)

Rocket (@rocketball1214) — Fans (rank 5) terminated

@bIackburn — Fans (rank 5) terminated

dsf (@177_6) — Fans (rank 5)

Eskel (@Eskel08) — Fans (rank 5)

AntxZ_y (@Antxz_y) — Fans (rank 5)

Chris (@SoSleepyChris) — Fans (rank 5)

Sarge (@HydropIant) — Fans (rank 5)

@Br1452232 — Fans (rank 5)

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

Rank structure

Lead1

Project Manager3

Developer3

Contractor7

Quality Assurance29

Fans647

Member690

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.

State of Ridgeway#6768136 · 33 shared members

USA | Law Enforcement Training Center#6768340 · 24 shared members

[USA]The United States of America.#758071 · 22 shared members

State of Firestone#2803360 · 22 shared members

State οf Mayflowеr#33462869 · 20 shared members

State of Ridgemade#35722639 · 20 shared members

State of Mayflower#3403692 · 18 shared members

‌‌ ‌ ‌ ‌ ‌‌‌ ‌ ‌‌‌‌ ‌‌ ‌ ‌ ‌ ‌‌ ‌ ‌ ‌ ‌‌ ‌‌ ‌‌ ‌ ‌#3234231 · 14 shared members

Hаrrison County#15665829 · 14 shared members

USA | Lаw Enforcеment Training Center#35730782 · 14 shared members

REACT Studiosᅠ#17180419 · 11 shared members

Broadview County#3016035 · 11 shared members

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.