This is a modded survival server called The Complex and it is built around a Backrooms style mod. The whole thing is about weird liminal spaces and strange levels that feel creepy and empty.
From what I can tell the main goal is exploring and trying to survive in these odd environments with other players. It is not about crazy raids or constant chaos. It is more about atmosphere and slow careful exploration.
The community is small and the staff is active so the server is watched pretty closely. Rules are enforced and they are serious about no griefing no cheating and no exploits.
If you like eerie places and survival that feels tense instead of loud this server seems like it fits that vibe.

