Hi Marcos!
In previous version it worked like this: when server detects that we have 1+ player in the multiplayer map or 4+ players any where in the game it sends invites to ALL players in the game so they can push single button and jump to multiplayer

Nobody complaints on this messages, but I decided to remove it from single player missions and show it only in menus.
After that multiplayer activity drops down significantly :(
So yea, I need to find a way to push multiplayer activity