Watch Dogs 2 is an action-adventure game with stealth elements. Played from a third-person perspective as protagonist Marcus Holloway, a young hacker from Oakland, California. The game features an open world set in a fictionalized version of the San Francisco Bay Area, an area more than twice as large as the Chicago setting from Watch Dogs. Players can navigate the city on-foot or by the various vehicles featured in the game, such as cars, trucks, buses, cable cars, motorbikes, quad bikes and boats. Marcus can hack into various electronic devices connected to the ctOS system with his in-game smartphone. For example, Marcus can modify the personal information of non-player characters to have them arrested, hack and manipulate every mobile phone featured in the game, disrupt traffic by hacking cars and traffic lights, hack into monitoring cameras, and carry out "mass hacking", which hacks the electrical equipment of a large group of people. The game introduces a seamless cooperative multiplayer mode, in which players can meet and interact with other random players. They can explore the open world and complete missions together, which will also help players to gain followers. The game features an emote system, which allows players' characters to communicate with each other through basic gestures. The game can be played completely online or offline. It also features two competitive multiplayer modes.