|Reading the manual for the first game now... it seems kind of interesting. A looping overworld section leading to 5 separate town areas, a day/night system, and labyrinths (the game's dungeons) which are locked until you do some specific story tasks. The pause screen is very Zelda-like, showing a bunch of optional hidden collectibles as well as required story items.|
One of the optional collectibles, warp squids, give you different warp dance powers that warp you to a certain place depending which warp room you returned those warp squids to.
Shantae has dance powers. Magical dances that give her different abilities. The dancing mechanic works kind of like playing the ocarina or conducting the wind. There's also a secret dance you can only learn if playing the game on a GBA.