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-The UnderGround Facility (V1.3A)-

-The UnderGround Facility (V1.3A)-

A Roblox experience owned by Hay Hay Studio.

Fighting & PvPENFurryFightingInfection

Description (written by the developer; not a statement by this register)

[Version: V1.3.2] Working on remaking and replacing assets. This will take time... NOTE: Any assets that look like KP are all remade and belong to the Hay Hay Studio development team. ❗️This game is in no way affiliated with Kaiju Paradise.❗️ ⚠️ Note: Shutdown = Update ⚠️ Note: This is not a copy or remake of the original game! (The Underground Facility By LAMINAX CO.)! This is very different. Not all changes are final! This game contains its own assets, own soundtrack, books (will add in the future), and a show that is connected to it (currently in the works). Will not handle well with Lower End Devices. Some things in this game may still be in Beta. Tags: The UnderGround Facility, Furry, Fighting, Facility, Infection, Crystallerian Stealing assets or the map will result in a DMCA takedown, Perma-Ban, and a possible Lawsuit (so don't do it). This game follows Roblox's TOS standards. Current Version: V1.3.2

Last updated by the developer 1 Jul 2026, 12:48 UTC.

0
playing (measured 12 Aug 2026, 07:47 UTC)
10,542
lifetime visits
71%
liked (68 👍 / 28 👎)
203
favourites (19.3 per 1k visits)
7 March 2022
created (per Roblox)

Play on Roblox →

Live players over time

Growth

Growth history is still building. We hold one measurement for this entry. A trend needs at least two, taken days apart — so this will fill in on its own rather than being estimated. We do not publish numbers we have not measured.

Measurement log — every players count we have recorded
Measured (UTC)PlayersChange
12 Aug 2026, 07:470first reading

Concurrent players at each of our measurements (insert-on-change).

Badge funnel

You Played!!! (BETA Tester!) · welcome5,314 · 0.00% win
The End? · progression439 · 0.00% win
Happy Birthday TUF!!!! · social320 · 0.00% win
A Ton of Visits!!!! · other319 · 0.00% win
Backrooms · other212 · 0.00% win
You met the Owner!! · other155 · 0.00% win
Christmas 2024 · other94 · 0.00% win
Christmas 2023!!! · other81 · 0.00% win
New Years 2025! · other80 · 0.00% win
Happy Birthday Me!!! · other65 · 0.00% win
Familiar Place · secret43 · 0.00% win
4 YEAR ANNIVERSARY! · other40 · 0.00% win
Halloween 2024! · social33 · 0.00% win
Reactor Core · progression32 · 0.00% win
New Years 2026! · other31 · 0.00% win

How many players have ever earned each badge — a proxy for how far players get before they stop. Steep drop-offs mark where a game loses people. Win rate is the past-day share of players who earned it; categories are assigned by a language model from each badge’s own name and description.