Well, the project I've been working on is a clone of Bejeweled, creatively titled 'Begemmed'. It's not feature-complete yet -- there's no sound, it doesn't prevent illegal moves, and it doesn't check to see when there are no moves left and the game's over. But it is playable, so I thought I'd throw it out there for people to play with.

Hit any button to get past the splash screen (which is currently just a palette of the colors I'm using). After the board fills, your cursor will show as a dimming of the gem at the current location (starts in the lower-left corner). Move it with the d-pad, and hit A to enter select mode, which dims the four adjacent gems; then hit a direction to choose a gem to swap with. Each 3-in-a-row match grants 1/5 of a point, and score is displayed with the auxiliary LEDs.

Be aware that this game will drain the hell out of your batteries.

http://rapidshare.com/files/220314546/MeggyJr_Begemmed.zip