Like its previous installments, "Mario Kart Wii" incorporates playable characters from the "Mario" series, who participate in kart races on 32 different race tracks using specialized items to hinder opponents or gain advantages. The game features multiple single-player and multiplayer game modes including a four-person split screen. Online multiplayer was supported until the discontinuation of Nintendo Wi-Fi Connection in May 2014. "Mario Kart Wii" uses the Wii Remote motion-sensing to provide intuitive and conventional steering controls; each copy of the game is bundled with the Wii Wheel accessory to augment this feature.