RSR Development Group #33265199

523

members (measured 3 Oct 2026, 21:50 UTC)

17 October 2023

created (per Roblox API)

10 August 2026

first measured by this register

Game fan groupsENgamingfan communitydevelopment

Description

Official Development Page / Fan Page for RSR players.

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

Membership history

Growth

7 measurements spanning 52 days, net +13. 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 508–525 and does not start at zero.

Measurement log — every members count we have recorded
Measured (UTC)	Members	Change
2 Oct 2026, 04:39	523	+1
26 Sept 2026, 08:18	522	-1
18 Sept 2026, 01:16	523	+3
12 Sept 2026, 08:14	520	-1
20 Aug 2026, 03:46	521	+3
13 Aug 2026, 13:43	518	+8
11 Aug 2026, 04:04	510	first reading

Ownership

Owned by MLR (@MuscleLineRailfan) 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

MLR (@MuscleLineRailfan) — Member (rank 1)

jerm (@Scialytx) — Member (rank 1)

NWORails (@HonayBaun) — Member (rank 1)

Middle1 (@Middleone14) — Member (rank 1)

JustAnormalPerson (@nitooplayergd) — Member (rank 1)

yes (@CSX3013ES44AH) — Member (rank 1)

Paul (@cruzgabb123) — Member (rank 1)

BurlingtonNorthern (@Avation01) — Member (rank 1) terminated

Straight2 (@coclle123) — Member (rank 1)

rochestertrains5385 (@MM122ndaccount) — Member (rank 1)

Isiah (@NS1221Productions) — Member (rank 1)

Adam_Playz (@Adam_471m) — Member (rank 1)

EpicEraGamer (@JamesG530) — Member (rank 1)

NS_1065Man (@juan567802) — Member (rank 1)

Thunderbolt (@tree45g) — Member (rank 1)

@coco_alexcoco — Member (rank 1)

KCSM4660 (@jhau309) — Member (rank 1)

Tennessee (@Silas7167) — Member (rank 1)

Len02 (@Spahn2021) — Member (rank 1)

shipCSX (@EasternHudsonFilms) — Member (rank 1)

@CSX_7598 — Member (rank 1)

@CanadaDog77 — Member (rank 1)

Godzilla2026 (@Bentleydino1121) — Member (rank 1)

SouthernMileDev (@gooddayfu) — Member (rank 1)

1September_Trainer (@tnt50095) — Member (rank 1)

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

Rank structure

Owner1

Backup Thing1

Developer1

Admin0

Tester0

Leaker0

Member518

Member516

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.

Railway Engineering Studios#8133793 · 33 shared members

Southline Ro-Scale#15611368 · 27 shared members

Rock Fort Lines#4278363 · 25 shared members

A & G Model Railroad Club#4755073 · 23 shared members

North American Ro Scale#11628469 · 20 shared members

(SST) Sneaky Steve Transit#4224295 · 20 shared members

United Rail Alliance#10397458 · 20 shared members

Steel Rail Interactive#5427458 · 20 shared members

Pilot Training Club#2794513 · 18 shared members

Double W Studios#11364978 · 18 shared members

The Shack Group#12181204 · 18 shared members

North American Rail Simulations#33254341 · 17 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.