GTA

Grand Theft Auto is the series that effectively defined the modern open-world sandbox, missions exist and a story unfolds, but the real draw has always been the city itself, dense enough with side activity and emergent chaos that ignoring the story entirely is a completely valid way to play.

Because police response escalates with a wanted-level system rather than a fixed difficulty, losing a pursuit usually means breaking line of sight and getting out of the search radius rather than trying to outrun every unit at once, ducking into an alley or swapping vehicles works better than a straight highway chase. Missions gate story progress, but side activities fund the guns, vehicles, and gear that make later missions considerably more manageable. DTA 6 pays homage to the same open-world freedom with a ragdoll-physics sandbox city of its own.