Swipe ad tap cotrols.
Follow the tutorial.

Welcome to the world of "Idle Medieval Kingdom Army," where you have the chance to build your own mighty kingdom and gather a formidable army to conquer new lands! In "Idle Medieval Kingdom Army," you'll step into the shoes of a wise and ambitious ruler determined to expand their dominion. Your journey begins with a small, humble settlement, but your vision is grand. Develop your kingdom by constructing essential buildings, managing resources, and researching new technologies.

For iOS:
Safari on iOS 8 and later supports WebGL 1.0, and on iOS 15 and later supports WebGL 2.0.

For Android：
Nearly all of them support WebGL