(This book reviews how to transplant 3d games on pc to android platform. Starting with the necessary technologies and software tools, the author gradually introduces how to build a pure java game from scratch, how to mix opengl3d graphics and jni, and how to combine the elegant design of java with the powerful functions of c, taking wolfenstein 3d and doom as examples, to make the mixed game reach the best function. This book is suitable for developers who understand the Android platform.)