Costly Experimental #35499161

949

members (measured 17 Aug 2026, 22:36 UTC)

15 January 2025

created (per Roblox API)

10 August 2026

first measured by this register

Description

Welcome!

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

Membership history

Growth

2 measurements spanning 7 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 949–950 and does not start at zero.

Measurement log — every members count we have recorded
Measured (UTC)	Members	Change
17 Aug 2026, 22:36	949	-1
10 Aug 2026, 18:06	950	first reading

Ownership

Owned by @JT_LUX as measured.

Experiences

0

players in this group’s experiences right now

30,980

lifetime visits across 4 experiences

💔 RIP TikTok Obby! (UGC)0 playing now

Squid Game Clone Engine0 playing now

USA and Iran Hangout [🔊]0 playing now

Clanker Obby 🤖0 playing now

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

Members we’ve seen

@JT_LUX — Holder (rank 255)

@Costly_management — Member (rank 1)

Sed_iffeh (@AbdullahGammerX) — Member (rank 1) terminated

Leah (@Kingboyof59) — Member (rank 1)

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

Rank structure

Holder1

Owner0

Developers2

Member950

Member947

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.

Roblox Developer Community#10720185 · 2 shared members

Costly Text to Speech#44147278 · 2 shared members

Partology#14247973 · 2 shared members

Costly x Jlegos7 x Adorin#683149087 · 2 shared members

Costly Towers#35980770 · 2 shared members

Costly Studios#32545600 · 2 shared members

Costly Entertainment#35499151 · 2 shared members

Only Premium Players#240105342 · 2 shared members

Costly Tycoons#950555174 · 2 shared members

Costly Group#35499152 · 2 shared members

Costly Area 51#950038997 · 2 shared members

9

Costly T-1#679756808 · 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.