You can play it online BGII style, meaning everyone saves their character on their own PC so that it COULD be edited.. but we don't do that. People put up servers and select one of the four chapters to start the game in, and you go. You can go solo, party up, or PvP if the server allows it.

People can also make their own missions, with the editor.

I think it's up to 80 people a game?