Kingdom Rush Frontiers is one of the popular Kizi games. Choose the favorite difficulty level and play free online with a lot of enemies. You will take the role of a commander and control an army of brave heroes. Your mission is to defend your castle and protect everybody in the kingdom. To complete the goal of Kingdom Rush Frontiers, you must launch the best troops to destroy the foe. Besides, you can call reinforcement or use other skills. Coins that you earn during the battle will help you purchase upgrades for your towers and for your fighters. Good luck!