Holy shit, finally. One of my favorite games of all time, and with NSO online I can actually play the multiplayer over the internet. I never had friends with this game way back when.
For anyone wondering, it's basically a Kirby Metroidvania with 4 player support even with AI, you can all independently explore the world and use phone battery power ups to summon each other to your location if you're far apart and want to link up. Awesome game.