Recently I have seen a lot of people asking questions about gangs and how they work so I decided to make this thread to help those who are confused about how the gang system works.
First of all, there are currently 5 gangs in Gotham City Impostors:
1. Wharf Rats
2. Killa Watts
5. Alley Cats
Now each gang has its own map. You will receive an invitation from the gang when you do great and earn lots of XP in their map.
Wharf Rats ---> The Docks
Killa Watts ---> Gotham Power
Carnies ---> Amusement Mile
Hazmats ---> Ace Chemical
Alley Cats ---> Crime Alley
If you are tired of one gang want to join another one don't worry, you won't lose your progress in that gang. For example, I am a level 3 Wharf Rat. I switch to Carnies for a while, then rejoin the Wharf Rats. I won't have to start over and will still be level 3.
So the best and fastest way to level up in your gang is to figure out which map you do your best in and stick with it. Now go out there and collect cool stuff from your favorite gang!