[Gandalf Parker]

Ahh I can see the load in that.

But actually the biggest maps of Dominions 3 (which Im famous for liking) is 1500 provinces. And on each turn-hosting they can all be active even if its still owned by independents unvisited by a player (since even indepts are susceptable to events which cause attacks or changes to their settings). It can support up to 91 players in a game.

The mud I host is 60000 rooms.

And a UO shard is pretty intensive.

But its moot. Unless it runs on linux, at least with a wine command, there would be a massive load running it.