Sierra Valley Institution #631060953
Game studiosENfictional loreroleplaygaming group
Description
SIERRA VALLEY INSTITUTION - Founded in 1983, Sierra Valley Institution has specialized in weapons development, biological sciences, and nuclear development for the past 43 years. Under the surface, until the events of the maverick-subject riots, their prisoners were regularly treated as test subjects. The research department was evacuated following the test subject mass riots, to which the site shifted focus onto riot suppression and damage control. Hidden in the valley, buried in the truth.
Written by the group; not a statement by this register.
Membership history
Growth
| Measured (UTC) | Members | Change |
|---|---|---|
| 30 Aug 2026, 15:12 | 157 | +2 |
| 29 Aug 2026, 01:25 | 155 | -2 |
| 22 Aug 2026, 08:27 | 157 | -1 |
| 21 Aug 2026, 01:30 | 158 | +1 |
| 15 Aug 2026, 06:14 | 157 | -1 |
| 12 Aug 2026, 05:32 | 158 | -1 |
| 11 Aug 2026, 08:36 | 159 | first reading |
Ownership
Owned by @nyxsakura as measured.
Members we’ve seen
@nyxsakura — Sierra Administrator (rank 255)
jay (@detachedjay) — Test Subject (rank 1)
@ukluvsu — Test Subject (rank 1)
@isamu737 — Test Subject (rank 1)
@wishformoolah — Test Subject (rank 1)
Silly (@sillyisawizard) — Test Subject (rank 1)
MrDoggy (@Mates13588) — Test Subject (rank 1)
@pvacifics — Test Subject (rank 1)
DivaCodex (@spongebobbery2) — Test Subject (rank 1)
Bxck (@CSSBxck) — Test Subject (rank 1)
miilikag (@miiliakg) — Test Subject (rank 1)
ThePeopleHunter (@thepeoplehunter0) — Test Subject (rank 1)
花園ゆりね (@HanazonoYurine) — Test Subject (rank 1)
Autumnfluff (@Cinerus_Zzzzzz) — Test Subject (rank 1)
@VizralArchive — Test Subject (rank 1)
@japartytim — Test Subject (rank 1)
LoxableArchive (@LoxabIe) — Test Subject (rank 1)
ToasterMesa (@footballmachine0) — Test Subject (rank 1)
@xXRedFlamyXx — Test Subject (rank 1)
EmperorOblivion (@TheEmperorOfOblivion) — Test Subject (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.