Grand Theft Auto V is an open world game.
Grand Theft Auto V is an action-adventure video game developed by Rockstar North and published by Rockstar Games . The open world design lets players freely roam San Andreas ' open countryside and the fictional city of Los Santos , based on Los Angeles . Grand Theft Auto Online , the online multiplayer mode , lets up to 30 players explore the open world and engage in cooperative or competitive game matches . Much of the development work constituted the open world 's creation , and several team members conducted field research around California to capture footage for the design team .