[ARC-478] #13070896

16,109

members (measured 20 Oct 2026, 16:57 UTC)

28 November 2021

created (per Roblox API)

10 August 2026

first measured by this register

Game fan groupsENSCP FoundationRoleplayFictional Universe

[ARC-478] is a game-fan-group Roblox community created on 2021-11-28. The group has 15978 members. It is not ownerless and lacks a verified badge.

Description

Based on modern times, ARC-478 is a facility notorious for operating with minimal supervision under the O5 council. Located in a valley somewhere in the northern hemisphere, the exact location is unknown. Grueling and extensive "ethical" testing occurs on-site on the many anomalous subjects inside. ARC-478 takes place in SCP Universe 39C, with many notable differences from the source content. The individual holding the title "The Administrator" does not exist, and the O5 council only exists as 9 regional overseers, and there is no O5 head. Founded by Paralusuz Secure. Contain. Protect

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

Membership history

Growth

525 measurements spanning 71 days, net +328. 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 15,728–16,185 and does not start at zero.

Measurement log — every members count we have recorded, most recent 20 of 525
Measured (UTC)	Members	Change
20 Oct 2026, 10:58	16,109	-1
20 Oct 2026, 07:16	16,110	-1
19 Oct 2026, 17:38	16,111	-1
18 Oct 2026, 17:21	16,112	-1
18 Oct 2026, 15:28	16,113	-1
18 Oct 2026, 13:59	16,114	-1
17 Oct 2026, 23:23	16,115	-1
17 Oct 2026, 19:31	16,116	-1
17 Oct 2026, 00:34	16,117	-1
16 Oct 2026, 20:52	16,118	-1
16 Oct 2026, 18:27	16,119	-1
16 Oct 2026, 15:11	16,120	+1
16 Oct 2026, 09:37	16,119	-1
16 Oct 2026, 00:28	16,120	+1
15 Oct 2026, 20:19	16,119	-1
15 Oct 2026, 19:58	16,120	-1
15 Oct 2026, 00:58	16,121	+2
15 Oct 2026, 00:16	16,119	-1
14 Oct 2026, 15:24	16,120	-1
14 Oct 2026, 13:37	16,121	first reading

Ownership

Owned by @Paralusuz as measured.

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

Experiences

8

players in this group’s experiences right now

2,005,614

lifetime visits across 4 experiences

SCP: Armed Research Containment 4787 playing now

1,602,279 visits

[BETA] ARCTops0 playing now

ARC Testing Branch0 playing now

[PUBLIC] ARCTops Testing Branch1 playing now

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

Members we’ve seen

@Paralusuz — [Site Administrator] (rank 255)

@Iizardware — [Site Director] (rank 90)

minty (@mintifyrs) — [Project Manager] (rank 85)

@Flamindy — [Site Developer] (rank 80)

charlie (@SurNautica) — [Site Developer] (rank 80)

@Aelar_Galanodel — [Site Directorate] (rank 70)

@3Radiant — [Level-4] (rank 60)

Bobbo (@BOBBOBY22) — [Level-4] (rank 60)

Blender (@MLGamerTravis) — [Level-4] (rank 60)

Neon_Light (@neonunspeakable) — [Level-4] (rank 60)

@cruxtruder — [Level-3] (rank 50)

Micha (@Hypnosous) — [Level-3] (rank 50)

DoktorShadow (@WarmongerAtrium) — [Level-3] (rank 50)

vortexsoldier (@SportmanMarkus) — [Level-2] (rank 40)

Jxxyy (@REMIND_ERVonLiebe) — [Level-2] (rank 40)

Tom (@tgarbrechtALTacc) — [Level-2] (rank 40)

Captan (@captantantan_imban) — [Level-2] (rank 40)

Beardo (@BeardoWasTaken) — [Level-2] (rank 40)

Ved (@Vedalian) — [Level-2] (rank 40)

Enthalten (@SurceII) — [Level-2] (rank 40)

ElderBorne (@Elderborne) — [Level-2] (rank 40)

DETER (@determinedmrdeadma2) — [Level-2] (rank 40)

Mari (@CalamariTamashii) — [Level-2] (rank 40)

ant (@anthmih) — [Level-2] (rank 40)

@ClownTheBozo — [Level-2] (rank 40)

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

Rank structure

[Site Administrator]1

[Site Director]1

[Project Manager]1

[Site Developer]2

[Site Directorate]7

[Level-4]5

[Level-3]12

[Level-2]2,172

[Level-1]2,387

[Class-E]22

[Class-D]11,213

Member15,822

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.

SCP:F ~ Special Containment Procedures Foundation#4743750 · 515 shared members

Special Containment Procedures Foundation [SCPF]#2760782 · 498 shared members

[SCPF - Special Containment Procedures Foundation]#4606577 · 482 shared members

SCP | Roleplay Community#5479038 · 439 shared members

Chillz Studios#2782840 · 417 shared members

Paradoxum Games#4914494 · 413 shared members

SCP-F ︱Special Containment Procedures Foundation#6650179 · 403 shared members

[:] Nova Corporation#4965800 · 384 shared members

Quantum Science Inc.#2847031 · 375 shared members

Hapless Studios#5502618 · 350 shared members

Stateview Correctional Facility. ∞#5025380 · 331 shared members

LSPLASH#3049798 · 320 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.