I want to get a present for my brother who just got a Wii. The game I got him(GameCube) doesn't work so I'm going to take that back and get him something else.

I want to get him something between 20 and 30 bucks. He likes adventure games and puzzle games. Childrens though. He has one wiimote and nunchuck. I think getting another set is too expensive. Any suggestions?