Three map levels with No. 1, Dalbom's Street 4, a very complicated layout with basic Arena type play, central area full of nooks & crannies inside & outside that changes from water medium to clear & back.  Aliens galore including those teeny guys of every stripe, making this a rapid run for solo play.  Supports a multitude of players.  Fast!  Good!  No. 2 is DINO Dungeon, very confined & rather than a Dungeon, appears to be a house, has furniture & a lovely yard full of Juggers.  Aliens for solo play.  May support four, but a tight arena-type area.  Three is River of Pain.