Kingdoms CCG is, duh, a CCG :) It‘s about players building a deck and battling other players. There is a campaign for some single player adventuring and game familiarity time along with many Arena ladders for extra challenges. The goal of the game is to build the best deck and become the top battler for your Kingdom! There are a few key things to grasp the game properly
To run Kingdoms CCG on high graphics settings your PC will require at least a 0MB GeForce GT 340 / Radeon X1900 GT with a Core 2 Duo E4400 2.0GHz or Athlon 64 X2 Dual Core 4200+ CPU. To be able to run at all you will need at least 1 GB system memory. In short you need a 9 year old PC for best Kingdoms CCG performance.