Gran Turismo 7 features the return of the single player campaign, GT Simulation Mode. Other returning features are the return of traditional racing tracks and vehicles, Special Events, Championships, Driving School, Tuning Parts Shop, Used Cars dealership, and GT Auto while still retaining the new GT Sport Mode, Brand Central, and Discover (now labelled Showcase) that were introduced in Gran Turismo Sport. The player needs to progress through tasks ("Menu Books") from the GT Café to unlock features like multiplayer, and all tracks and cars. There are 514 cars total, from a range of homologated production cars to LMP1 endurance class racecars.

(description derived from wikipedia)