(This book mainly focuses on the development of 3D games on the Android platform, and introduces the basic knowledge of OpenGLES and the whole process of 3D game program development to readers in combination with practical cases. The book is divided into two chapters, 22 in total. The first chapter introduces the basic knowledge of OpenGLES in detail based on simple and understandable examples. The second chapter introduces the development steps of seven real cases in detail, gradually explaining the actual development process of Android 3D games to readers. The source code also includes specific comments to help readers master every detail of the code as much as possible, and quickly master the development of Android 3D games. The book goes from simple to deep. From the basic knowledge of 3D game development and use under the Android platform to the development of large-scale game programs, the framework is clear and the language is concise, which is very suitable for beginners and advanced developers. This document includes the following annexes:)