Yep, dream world is a commonly-used term. I guess thinking about not having any Worms dreams for a few weeks prompted me to have another one:
A Wormer friend was playing a super sheep race, apparently as part of a league tournament. The other players did ok, but he blew up his worm and drowned it right at the start of the first map. That was it for him, he was eliminated from the tournament. So he started a thread on some forum and had a big rant about how stupid and unfair that was. Other people just posted off-topic replies about other Worms stuff I can't remember. I went back to watching the super sheep race. The map was almost as intricate as a battle race map with lots of wrong turns, but somehow the sheep could be steered through it.