Hi, assuming the server has a good enough CPU, one server process can contain about 100-120 players and 300-400 NPCs, depends on your game. You can have several server processes on a single physical server (about 8 for a regular quad-core CPU) and several physical servers if you want. Currently, traveling between server processes (zones) can be done with a loading screen, but I’m also working on a seamless solution.
The server is authoritative in MMO Kit, so out of all the things you see in this video, only zoomhack would be possible.