QUOTE(wolfheat)
Ok, Is that the only reason or cant I have any overlaps in the game?
It's only the map name, you can put overlaps in the mission briefing and in-game with no problems at all.
QUOTE(fritfrat(U))
I thought they were playable, but that no one could join them. Am I wrong in that?
A lot of games require more than one person. It makes those unplayable, or at least unwinnable.