Crossovers in the HD Universe are missions which involve multiple Protagonists from separate GTA games to appear together. The most popular crossover is the Impossible Trinity in IV, TLaD, and TBoGT. Grand Theft Auto: Chinatown Wars doesn't include crossovers, as it takes place one year after the events of GTA IV and Episodes from Liberty City.
GTA IV and DLCs
|GTA IV and DLCs|