Mario, Luigi, Princess Peach, Wario, Yoshi, Donkey Kong, Toad and Bowser put the pedal to the go-kart metal in all-new tracks, plus many hidden courses. Grab coins to max out your speed and blast your rivals with the ever-popular arsenal of red, green and spiked Koopa shells. DS Download Play: As with all DS Download multiplayer games, the DS Download Play in Mario Kart DS requires that only one player has a copy of the game. Unlike past DS games, however, DS Download Play in Mario Kart DS allows multiple players who have the game card to play with multiple players who do not have the game card. DS Download Play offers the following features: 2-8 player simultaneous wireless game play Choice of multiplayer racing, Balloon Battle, or Shine Thief modes Players who own Mario Kart DS can choose their own characters and use personalized icons Players who do not own Mario Kart DS must play as Shy Guy; they cannot use personalized player icons Track selection is limited to eight tracks for racing and three arenas for Balloon Battle and Shine Runner modes DS Download Play is limited to the 100 cc engine class Multi-Card Play: Multi-Card Play requires all players to have their own copies of Mario Kart DS , giving players more options, modes and tracks to choose from. Multi-Card Play offers the following features: 2-8 player simultaneous wireless game play Choice of multiplayer racing, Balloon Battle or Shine Thief modes Players can choose from different engine classes No limits on character choice No limits on track choice Player's win/loss ratio is saved and tracked Players who race locally are automatically added to each other's friend roster and then can race via Nintendo Wi-Fi Connection Players can trade ghost data wirelessly, allowing them to race against each others' best times. Nintendo Wi-Fi Connection: Nintendo Wi-Fi Connection is a free online game-play service provided by Nintendo to Nintendo DS owners. It offers seamless access to online game play and an environment that is welcoming to gamers of all skill levels. Features include: 2-4 Players racing simultaneously Choice of playing with: Friends Only (players registered as Friends) Rivals (players with similar skills) Recent Opponents Regional Racers (players in their country) World Racers (players anywhere in the world) No limit on course choice, but each player votes for a course and the course with the most votes wins (in case of a tie, the course is chosen randomly) No limit on character choice Players can create and use personalized player icons Connecting to the Nintendo Wi-Fi Connection will be quick, easy and seamless. Players can go to an official Nintendo hotspot and immediately go online and start playing. To use their home Wi-Fi routers, players first must configure the DS to connect to their routers by entering the router's network ID and optional security key or install the Nintendo Wi-Fi USB Connector on their PC and configure the DS to enable it to share the PC's broadband connection. After that, players can go online anytime without further configuration. Friends are registered to the friends roster either by exchanging and entering Friend Registration Keys or by playing local Multi-Card Multiplayer mode together.