If you want to play Knockout City with your friends, you have come to the right place. Go through the guide and follow step-by-step instructions to play the multiplayer game.
You have to click on the triangle button located at the top right corner of your screen and move to the Friends section.
Select the friend that you want to play with and then click on “Invite to Group”.
Your friend will need to accept this invitation. To accept the invite, he has to go to Invites and then click Join Group.
And then you can play the game with your friend.