This is my favorite multiplayer game I think I have ever played. What you do is pretty much solve randomly generated dungeons using special items, and a forgetload of teamwork. It has many items you can get in each level, a shield, bobs, arrows+Bow, a magnet, a shrinking hat, and a jumping cape. You can only have one item at a time though, so you better choose wisely. The reason this multiplayer wasn't as popular was probably due to complications of not many people owning this game or having a link cable.
The reason that I prefer this game over it's gamecube sequel is due to the fact that the second game limits you to stay on the same screen as the other players and has less uniqueness.
I wish nintendo could make a 3rd one just for the DS. It should take advantage of the one-cartridge multiplayer.
Here is a YouTube video to show two player game play
http://www.youtube.com/watch?v=Sfu5Gcg4fng&feature=youtube_gdataminish cap borrowed most of it's sprites and sounds from this game
Have any of you guys played this?