City Kings is the best way to show that your gang is the coolest in the world! Conquer districts and entire cities to earn rewards and the respect of other gangs.

 City Kings is a challenge that requires gang members to roll out their ultimate cars for an epic battle against a rival gang. All gang members who already have ultimate cars can initiate and join the attack. Once 5 gang members sign up for an attack, the matchmaking process begins and the gang is matched with an opponent gang for a 24-hour long fight. All gang members will receive a notification when the attack begins.
Before joining the attack, players need to assemble 3 ultimate cars in the separate garage. These can't be changed once you enter the city. There is no need to build the same cars each time as the garage remembers the last builds.  
The city is made up of districts and the districts are made up of sub-districts, where the gangs fight for supremacy. Each sub-district has several buildings with parking lots that are either occupied by neutral guards or by opponents. Tap the building and select "Attack" to see the parking slots and choose one to start a fight.
- If you win, your car will occupy the slot and will guard it. You won't be able to use it to attack again, unless opponents win the parking slot back or gang members swap your car with theirs. This is what the second building option - Defend - is for. If you choose it, you can see all your gang mates’ cars guarding the slots, and you can replace some of them with your cars.
- If you lose, your car will lose all its health points and will need to recover them before it can be used to attack again. You can heal it either by using your free Heal tool (one of Uncle Tony’s tools, which can be  earned by getting trophies) or by buying one for gems (costing more with each purchase, starting at 50 gems and ending at 1000 gems).
Uncle Tony has another useful tool especially for the city fights. It is the Scout, which can reveal all cars in the building for a limited time, to help gang members choose their opponents wisely.
When a gang wins more than 50% of the parking slots in the building, it starts getting points. The number of points that can be earned from a building is displayed next to it, and its color indicates who has the most slots (blue for your gang and red for the opponent). The points are not added immediately, but after a cycle, so you need to hold on to those parking slots to keep getting more points. Each sub-district has two buildings with the same name, which are worth double points if conquered by the same gang. The gang with the most points by the end of the attack is declared the winner. It is also possible to secure a faster victory by gaining the maximum points.
Players can use the gang chat and personal notifications to get information about the status of their cars and the occupied buildings, and to agree on the course of action necessary to win.
If the gang wins, each gang member that has participated gets an ultimate toolbox. Completing a district is also rewarded with an ultimate part. Each district can only be rewarded once in each city, and completing the same district again with another gang will not be rewarded with a part again.
Gangs that complete all 10 districts of the city gain a special city costume. When the fights for the city are officially over, the gangs with the most points on the Best Gangs leaderboard get additional prizes and special city avatars to proudly show off.
City matchmaking is based on a variety of parameters including, but are not limited to, progress, strength, number of members and activity. Matchmaking strives to provide the most suitable opponent available at the time of the attack and does not guarantee an equal opponent each time.