Online multiplayer. 1 'main-world' & smaller ones.

Hello there fellow developers, artists!

So, I don't think giving much info about the game is required now. Basically what I want is to have a main world / overworld, players will drop into, (unless they were at some place else the last time). And from that world you could visit other -smaller- locations. This is something you could see in morpg's, for example.

While these morpg's seem to be a main concept on forums and answers, there doesn't seem to be any information regarding this..

Anyways, imagine a X-amount of players in 1 area/world. One of them walks over to an entrance that leads, maybe, underground. This one person should be seperated from the others.

I tried playing around with scenes for this, but that just messed up the server. But I don't think you should use different lobbies/rooms for this either?

Those games usually have a lobby system that pops up after you signed in. It lets you choose a world while theyre all identical. Still, within those worlds you can still do what I explained above.