Experimental Vault 87 #5167544

16

members (measured 10 Oct 2026, 05:56 UTC)

14 September 2019

created (per Roblox API)

10 August 2026

first measured by this register

Membership history

Growth

2 measurements spanning 50 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 16–17 and does not start at zero.

Measurement log — every members count we have recorded
Measured (UTC)	Members	Change
10 Oct 2026, 05:56	16	-1
21 Aug 2026, 06:48	17	first reading

Ownership

Owned by @TopRadius 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

@TopRadius — [OS] Overseer (rank 255)

@VaultTecMainframe — [DEV] Vault-Tec Engineer (rank 162)

Lone (@LonelyRBX) — [DEV] Vault-Tec Engineer (rank 162)

IncidentDecorate (@Incident_Decorate) — [DEV] Vault-Tec Engineer (rank 162)

GrumpyMan (@Alexwolfopgamerlol) — [VD] Vault Dwellers (rank 1)

@fleetline51 — [VD] Vault Dwellers (rank 1) terminated

@ThomasMEckhart — [VD] Vault Dwellers (rank 1)

Kantor (@sweetramo) — [VD] Vault Dwellers (rank 1)

void (@vo1dspire) — [VD] Vault Dwellers (rank 1)

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

Rank structure

[OS] Overseer1

[DOS] Deputy Overseer0

[DEV] Vault-Tec Engineer3

[CoS] Chief of Staff0

[C] Chairman0

[DM] Division Managers0

[DDM] Deputy Division Managers0

[DS] Division Staff0

[GS] Game Staff0

[FA] Foreign Ambassadors0

[VS] Vault Security0

[VM] Vault Medical0

[VE] Vault Engineers0

[VS] Vault Scientists0

[S] Subjects0

Member17

[VD] Vault Dwellers13

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.

Fallout: Vault 15#4742807 · 4 shared members

[Vault Tec] Vault 57#6070576 · 4 shared members

Project: Havenpoint Development#5659983 · 4 shared members

Paradoxum Games#4914494 · 3 shared members

Vault 52#8652530 · 3 shared members

Lonely Productions#4671070 · 3 shared members

Edevane Family#12318284 · 3 shared members

9

-- The Brotherhood of Steel --#4930464 · 3 shared members

8

[Vault Tec]#6086127 · 3 shared members

5

Chillz Studios#2782840 · 2 shared members

KizmoTek Studio#3115970 · 2 shared members

USSF - United States Special Forces#22025 · 2 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.