Backrooms Day 99 #146604302
Backrooms Day 99 (2026) is a Roblox group measured at 38,799 members. It holds Roblox's verified badge.
Membership history
Growth
| Measured (UTC) | Members | Change |
|---|---|---|
| 16 Oct 2026, 07:22 | 39,034 | +1 |
| 16 Oct 2026, 07:11 | 39,033 | +5 |
| 16 Oct 2026, 05:20 | 39,028 | +6 |
| 16 Oct 2026, 03:21 | 39,022 | +3 |
| 16 Oct 2026, 01:50 | 39,019 | +2 |
| 16 Oct 2026, 01:30 | 39,017 | +3 |
| 15 Oct 2026, 23:32 | 39,014 | +1 |
| 15 Oct 2026, 22:00 | 39,013 | +1 |
| 15 Oct 2026, 21:40 | 39,012 | +4 |
| 15 Oct 2026, 20:33 | 39,008 | +2 |
| 15 Oct 2026, 20:01 | 39,006 | +2 |
| 15 Oct 2026, 19:42 | 39,004 | +1 |
| 15 Oct 2026, 18:10 | 39,003 | +1 |
| 15 Oct 2026, 17:51 | 39,002 | +3 |
| 15 Oct 2026, 16:00 | 38,999 | +2 |
| 15 Oct 2026, 14:01 | 38,997 | +4 |
| 15 Oct 2026, 12:10 | 38,993 | +5 |
| 15 Oct 2026, 10:11 | 38,988 | +3 |
| 15 Oct 2026, 08:20 | 38,985 | +1 |
| 15 Oct 2026, 06:41 | 38,984 | first reading |
Ownership
Owned by happy (@DevelopedByHappy) as measured.
Claimed by user #73634311 — observed between sweeps, detected 10 Aug 2026, 16:32 UTC
Detection dates bound when a change was seen by this register, not when it happened.
Groups seen changing owner — the largest ever handed over and the most recent — are on the ownership transfers board.
Experiences
Experiences this group owns, by lifetime visits. Live-player counts are from our last measurement.
Members we’ve seen
happy (@DevelopedByHappy) — Owner (rank 255)
@23avoinea — Member (rank 1)
Rom_DEV (@RobloxTeam_HQ) — Member (rank 1)
Iris (@Siartiasn) — Member (rank 1)
Iniko (@Iniko_Enyo) — Member (rank 1)
V4mp (@fresa0203) — Member (rank 1)
@EA_Data — Member (rank 1)
Rebzyyx (@lilibellule44) — Member (rank 1)
invisibruh (@Tmasterxtreme) — Member (rank 1)
@RocketMcRock — Member (rank 1)
hfr (@hfr_theEpic) — Member (rank 1)
@kweun19 — Member (rank 1)
@skyfloans — Member (rank 1)
Red_Laser (@MarioFanX326) — Member (rank 1)
ItzMossy (@Jayrobloxyt0) — Member (rank 1)
@zisarid — Member (rank 1)
@Simpilex — Member (rank 1)
uwu (@kwornia) — Member (rank 1)
Lampert (@boogiewoogie1098) — Member (rank 1)
@vsunghov — Member (rank 1)
Jbd (@THUNDER2022LIGHNING) — Member (rank 1)
ithrowtomatoes (@itsAboutDrive_doge) — Member (rank 1)
retry (@retrystu) — Member (rank 1)
maddkrow (@onyxkrow) — Member (rank 1)
Linnxy (@LinnxyReal) — Member (rank 1)
A sample — only members this register has independently measured, highest rank first. Not the full roster.
Rank structure
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.
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.