Grand Theft Auto: San Andreas - Greatest Hits is an action-adventure game for PS2 set in a fictionalized California in the 1990s. Players control Carl CJ Johnson, who returns home to re-establish his old gang and unravel his mother's murder. This open-world game allows exploration of three major cities and extensive rural areas, with gameplay involving driving, shooting, and role-playing elements. Players complete missions to progress the story and engage in various side activities, with freedom to roam the expansive game world. It's a critically acclaimed title known for its deep narrative and vast open-world gameplay.