"Watch Dogs", players will use the city of Chicago as the ultimate weapon for a unique revenge style. All large cities have network connections, and urban infrastructure is monitored by complex operating systems. This system is called the Central Control System (ctOS). It controls almost every corner of the city's technology, and has the key information of all city residents. Players will play Aiden Pierce in the game. As a talented hacker and a former villain, his past crimes have led to terrible family tragedies. Now, players are tracing the culprit that once hurt the protagonist's family. By manipulating all objects connected to the city network, players can monitor and invade everyone's system. You can also access ubiquitous surveillance cameras, download the target ’s personal data to find them, control traffic lights and public transportation systems to block enemies, and more possibilities.

Players can use their smartphones to control the city ’s infrastructure in real time. They can trap the enemy in a chain of 30 car accidents by manipulating traffic lights. Intrusive city system: "Watchdog" occurs in a city that completely imitates reality in. Either connect and board the sky train to avoid the lawful pursuit, or you can hide from the arrest by quickly raising the suspension bridge. All objects connected to the urban ctOS system can become players' weapons.

Street Justice: Living in downtown Chicago, where violence is prevalent, players need to master the skills of street fighting, use a baton to blow down the enemy with a lethal blow, or experience an unprecedented gun battle-its physical simulation breakthrough is comparable to any shooting game . Players have the opportunity to obtain a total of more than 30 traditional weapons.

Drag racing: After being assisted by the development of the acclaimed "Cyclon" series and inheriting the famous Ubisoft Reflections studio, "Watch Dog" can provide players with a stable horsepower explosion. Players can drive more than 65 vehicles with the highest physical operation level to explore huge cities while completing missions.