From the back of the case
"Puzzle Fans, Unite!
Grab a stylus and slide, stack, and shuffle blocks in over 15 single-player games - or take on all corners over Nintendo Wi-Fi Connection.
Touch the screen to slide blocks! Create complex chains and combos!
Battle friends and rivals on Nintendo WFC or over local wireless!
Talk to friends around the globe! Compatible with the Nintendo DS Headset (sold separately)."