Watch Dogs 2 is an open world action-adventure third-person shooter. Set within a fictionalized version of San Francisco, the game is played from a third-person perspective and its world is navigated on-foot or by vehicle. The main character was wrongly framed for a crime he did not commit when he was still a child by the upgraded ctOS system, ctOS 2.0, which connects his personal information to the crime. Players can choose between the aggressive approach, in which they defeat enemies with firearms, which are made with a 3D printer, explosives like mines, or Marcus' own melee weapon, which is a billiard ball attached to a bungee cord also called a thunderball, and the stealth approach, in which they can evade enemies or paralyse them temporarily with Marcus' Taser.