Jacys Studios ROBLOX #5288558
Game studiosENgaminggame promotionin-game rewards
Jacys Studios ROBLOX is a verified game-studio group on Roblox. It was created on 2019-11-23. The group has 238,488 members. It is not ownerless. It does not have a verified badge.
Description
The Official Group for Prior Extinction! Group benefits: Unlock Citipati.
Written by the group; not a statement by this register.
Membership history
Growth
| Measured (UTC) | Members | Change |
|---|---|---|
| 4 Nov 2026, 13:20 | 250,882 | +1 |
| 4 Nov 2026, 13:15 | 250,881 | +2 |
| 4 Nov 2026, 12:42 | 250,879 | +3 |
| 4 Nov 2026, 12:30 | 250,876 | +1 |
| 4 Nov 2026, 12:08 | 250,875 | +5 |
| 4 Nov 2026, 11:30 | 250,870 | +2 |
| 4 Nov 2026, 11:04 | 250,868 | +2 |
| 4 Nov 2026, 10:52 | 250,866 | +2 |
| 4 Nov 2026, 10:40 | 250,864 | +1 |
| 4 Nov 2026, 10:28 | 250,863 | +2 |
| 4 Nov 2026, 10:06 | 250,861 | +1 |
| 4 Nov 2026, 09:47 | 250,860 | -1 |
| 4 Nov 2026, 09:25 | 250,861 | +1 |
| 4 Nov 2026, 09:22 | 250,860 | +2 |
| 4 Nov 2026, 09:12 | 250,858 | +1 |
| 4 Nov 2026, 08:40 | 250,857 | +4 |
| 4 Nov 2026, 08:14 | 250,853 | +2 |
| 4 Nov 2026, 08:05 | 250,851 | +1 |
| 4 Nov 2026, 07:46 | 250,850 | +1 |
| 4 Nov 2026, 07:40 | 250,849 | first reading |
Ownership
Owned by @Jaco2811 as measured.
Owner first observed: user #30939053 — observed between sweeps, detected 10 Aug 2026, 12:34 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.
Studio track record
3 experiences, 141,554,491 total visits, 2,531 playing now, newest released 18 April 2021.
Biggest hit: experience #2527789729 with 125,493,972 visits.
Totals cover the experiences this group owns that this register has measured, as of our last measurement.
Members we’ve seen
@Jaco2811 — Lead Developer (rank 255)
Siren (@RemnantsOfSiren) — Programmer (rank 254)
@SpareFuse — Programmer (rank 254)
VMPR (@Vampirfinch) — Sr. Developer (rank 254)
@Rhaoke — Programmer (rank 254)
Plant (@anotheralp) — Developer (rank 252)
brooks (@bxbric) — Moderator (rank 251)
Lua (@LuaBroski) — Moderator (rank 251)
Xin (@xineoh_P) — Moderator (rank 251)
BeamMaster52 (@kony0519) — Balance Team (rank 249)
ltima (@matiassantiago134) — Balance Team (rank 249)
Wrecker (@WreckerSalvage) — QA Tester (rank 248)
Rexy (@kan_keneki701) — QA Tester (rank 248)
@monkeriot — Youtuber (rank 247)
CaptainCapi (@CaptainCapii) — Youtuber (rank 247)
AztroVoid (@dolarek567) — Youtuber (rank 247)
ChipChi (@littlechipchi) — Youtuber (rank 247)
Dev (@De2v) — Youtuber (rank 247)
@DiegoG4mersBR — Youtuber (rank 247)
@JJangMuzii — Youtuber (rank 247)
CoFLX (@iamCoFLX) — Youtuber (rank 247)
CrocEdge (@CrocEnge) — Youtuber (rank 247)
Yang (@Moda_boy) — Youtuber (rank 247)
Drom (@Dromster999) — Youtuber (rank 247)
Dorm (@Dorm3404) — Realism Supervisor (rank 241)
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.