Any Co-op DS games ?

Are there any co-op ds games on the ds?

Here what I can think of. 

Castlevania POR : Boss Rush Mode (one level only) ... but hey ! it's Wi-Fi

Children of Mana : Full game but your are limited on saving and other things.  It's local wireless NO Wi-Fi !

To answer your question : yes but it's really bad co-op

In Animal Crossing you can to a certain extent...

Like pull out weeds together or something... :S

EDIT: In Elite Beat Agents there's a co-op mode where you team up to play the songs... It's kinda poor though