Watchdog is a role-playing game released by Ubisoft in 2014, which adopts the sandbox playing method of open world. The game tells a wonderful story. The game uses the new anvilnext engine to create a vast and huge world. This open world adventure game took place in Chicago. At that time, electronic devices have been built into almost all items, and the whole city is relying on them. The player wants to play Aiden Pearce, an expert who is proficient in hacker technology, so he decides to use his expertise to punish the corrupt elements in the city, punish the traitors and eliminate the evil.