The engine that manages real-time battle calculations, troop movements, and resource generation.

Private server files are third-party modifications of the game's original backend code. They allow individuals to host their own version of the game on a local machine or a Virtual Private Server (VPS) . These files typically include:

Some older mobile MMOs have been officially abandoned by their developers. Hosting a private server for a dead game (e.g., Legend of the Cryptids or Rage of Bahamut ) is a gray area, but developers rarely pursue legal action. No such luck with CoK—it remains actively monetized.