As the release date for Watch_Dogs comes closer, some more details of it have been revealed.
In the single player mode, the player can be invaded by people on their friends list and follow them around the city.
While looking like an NPC, the invading player can try and steal data from their friend while stalking them.
The host player will be notified that their data is being stolen and will have to quickly figure out which NPC is actually an invader.
Invading players can also start multiplayer games in a host’s single player game when they get close enough to them.