It's been on the marketplace for a while but I didn't watch the video until yesterday. Kid Icarus Uprising. It's going to be big!!
It has what appears to be a fun, epic storyline. That's what I'm buying it for.
It has a recognizable character/classic franchise for the old school Nintendo fan.
It has mulitplayer death match. That's what the hardcore will buy it for.
It has an AR Card Collecting/Card Battle system like Pokemon or Yu Gi Oh (I think). That's what the kids will buy it for.
The last one, especially, is what is going to make this game big. Nintendo figured out a long time ago that if you make the next craze among the playground set, you make money. I can imagine kids begging their parents for a 3DS so they can take part in the 3D card battles (which should be more accessible than other card games). It has the potential to be a phenomenon and the start of something huge. Mark my words.
