Jump Ultimate Stars is Japan only, according to release data on Gamefaqs. Some of us don't spend tons of money importing and/or don't import because we can't read Japanese.
Smash would be cool on the DS, if it was done correctly, but I more want a pick-up play game - that Smash is - on the DS. Something that you can just mess around in, if you want, or you can play seriously. Mario Kart doesn't cut it for me, and I haven't heard of anything with good single and multiplayer (preferably Wifi along with local wireless) that'd really fit the bill. The DS doesn't have that must-own game. Mario Kart is cool, and all, but it's a racing game and is under the limitations (even if some are bent with stuff like battle mode). I know there's Metroid Prime Hunters, but I've read that other than Wifi, it's basically pointless. And the demo I played at a store was confusing, to say the least. Coulda sworn I always spawned in the same spot.
Unless someone can point me towards a DS game with depth, multiplayer, but is also pick-up and play. Not, pick up and train for a few dozen hours before doing serious multiplayer, like Pokemon. X-|