Upside Down Zones flips gravity, the player camera and mobs upside down inside areas that an admin marks. Outside a zone everything is normal
Commands (op only
/flipzone add <name> <corner1> <corner2>: make a zone between two corners
/flipzone list: show all zones
/flipzone remove <name>: delete a zone
Zones are saved on the server, so you only set one up once.
Install on both the server and the client

