Ever heard of the disney game Clubpenguinlite Penguin Force for nintendoDS or DSi. You want but before make sure you really want it.

Features:

WiFi connection

Access to D-gamer

Six mini-games

It does have lots of missions, and create your own peguin , earn items , rewards(trophys);buy cloths too and have puffles everything that you do in online clubpenguin you do in the video game.Don't want your friend playing in your account they can play the guest account.

I have and its good it keeps you real busy!Why , Get bored with the game right there you have Dgamer, you could create own account online or just be a dgamer guest.
-Try the new game herberts revenge!