Simplify the following text for a Grade 8 native English-speaking person.
Original: Mario Kart Wii includes 32 different tracks , including 16 new tracks , four tracks each from Mario Kart 64 , Mario Kart : Double Dash ! !
Simplified: Mario Kart Wii has 32 different tracks , having 16 new tracks , four tracks each from Mario Kart 64 , Mario Kart : Double Dash ! !