The heart of GRID is the career-mode called GRID World. Divided into the 3 regions USA, Europe and Japan, you have to earn money and prestige points to move up into a higher license category which then gives him access to more and harder racing events. These events are divided into categories like normal races, Drift-events, Destruction Derbies and even the famous 24 hours race in Le Mans.
But not every car is suitable for every event so there are several different series to chose from. So while the player drives a tuned car for the Drift- or Racing-events in Japan, muscle cars await him in for the Destruction Derbies in the USA or Formel 3000 racers in Europe. Each car also handles very differently. Of course the player needs to buy the suitable car first before he can enter a tournament.