Best multi-player DS games?

[Queasy]

I'm trying to work on getting my son some more DS games. Especially games that he and I or his cousin or eventually his sister can play together. Even more especially, those games that require only one card to play multi-player.

So far we have Mario Kart DS and that is pretty much it in terms of DS multi-player. I meant to get him Mario Party DS for Christmas but was misinformed that his grandmother had gotten it for him already and I had already spent the budget by the time I found out.

So, other than Mario Kart DS and Mario Party DS, what are the other good multi-player games?

 

[RandomFool]

I like new Super Mario Bros one cart multiplayer. It's only 2 player and you basically run around a small map collecting and stealing stars. Simple but fun. Reminds me of Mario 3 battle mode.

I also read somewhere that Mario & Sonic DS is a good multiplayer game but I don't know if it supports single cart play.