Abort Automatic Play mode - After turning on Automatic Play mode, hold Start when turning on the Nintendo DS to return to the main menu instead of starting the game.

Birthday greeting - Enter a chat room in PictoChat on the date that you entered as your birthday in the system settings. The message "Happy Birthday! Today is [your name's] birthday!" will appear. The starting sound of the DS will also change on your birthday.

Game Boy Advance in-game reset - While playing a Game Boy Advance game, hold A + B + Start + Select to return to its title screen.

In-game reset - While playing a Nintendo DS game, hold L + R + Start + Select to return to its title screen.

Quick Game Boy Advance start - With both a Game Boy Advance and Nintendo DS game inserted, hold B when turning on the Nintendo DS. It will advance directly to the Game Boy Advance games without the usual warning screens.