BiomeGate

Prevent players from exploring and interacting with selected biomes. Protect your server from racing ahead lovers.

Player in selected biomes will be affected by status effect which

You can allow admins to ignore effect (enabled by default).

You can allow particular biome if global key is set.

Effects are configurable.

Installation (manual)

Copy BiomeGate.dll to your BepInEx\Plugins\ folder

The best way to handle configs is Configuration Manager.