Every turn, you may either move your king or shoot at enemy pieces, after what you'll need to move again to reload your shotgun. Avoid checkmate and kill the enemy king to complete the floor. After each floor, you may choose between two random combinations of one upgrade for you and one upgrade for the other side. Choose wisely and keep on winning floors and you just may get your kingdom back.
Runs may take ~20 minutes to complete. The game features 15 ranks of difficulty, unlockable cards, over 80 achievements to complete, an endless mode, and now a chase mode where you get continually assailed from all sides!