KOTC refers to ( King of the Castle )
King of the castle is based on a story where you are captured in a stage called ( cave )
In order to get out of cave you need to win 3 games in a raw (without losing) vs 3 different cave players.
After you are out of cave you would find yourself in a mountain stage where you have to capture 3 more players ( win 3 games vs 3 different players in a raw without losing )
The story continues and you need to find your way through different stages until you reach your Throne.
When you reach your throne, you get the title of King of the castle and you need to defend on your throne.
Every stage in kotc has its own rules and type of games
Extra rules related to KOTC are located under (KOTC Rules) after you login and join a game.