The free-to-play title allows players to build castles which must be defended from virtual or human opponents. A wide arsenal of upgradeable weapons is at hand for reducing enemy castles to mounds of rubble. The high-speed battles in PvP mode require the player to make the most of cunning defensive strategies, precision aiming and to upgrade their weapons intelligently. King of Castles is designed for quick and easy gameplay in which competition with friends and family can take place in both real-time and turn-based modes. In addition to the construction phases and exciting castle battles, high score lists provide extra motivation for aspiring castle lords.