RSR Development Group #33265199

521

members (measured 22 Aug 2026, 10:45 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

3 measurements spanning 9 days, net +11. 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 508–523 and does not start at zero.

Measurement log — every members count we have recorded
Measured (UTC)	Members	Change
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.

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)

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.

Steel Rail Interactive#5427458 · 9 shared members

Railway Engineering Studios#8133793 · 8 shared members

Southline Ro-Scale#15611368 · 8 shared members

Rock Fort Lines#4278363 · 7 shared members

North American Ro Scale#11628469 · 7 shared members

A & G Model Railroad Club#4755073 · 7 shared members

Double W Studios#11364978 · 6 shared members

MLR's Dungeon#35295118 · 6 shared members

Pilot Training Club#2794513 · 5 shared members

(SST) Sneaky Steve Transit#4224295 · 5 shared members

United Rail Alliance#10397458 · 5 shared members

North American Rail Simulations#33254341 · 5 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.