It has to have a name, but I can't find it. MM1 was VARN. MM2 was CRON. MM3 was Terra. MM4 and MM5 were Xeen. MM6 began with a continent named Enroth, but the world was not named Enroth. MM7 moved across the sea (in what direction, I don't know) to another continent, Antagarich, but the world is not named Antagarich. MM8 takes place on yet another continent, Jadame. A fourth continent, Vori, was even mentioned.

Then everybody hops on board a new world in MM9, which is immediately named Axeoth. What the heck?