An Android game APK is a file format used to distribute and install Android games on mobile devices. The acronym “APK” stands for Android Package Kit, which is the file format used by the Android operating system to distribute and install apps. These files contain all of the necessary code and resources for the app to run on an Android device. Once you download the APK file, you can install it on your Android device by enabling the “Unknown Sources” option in the device’s security settings and then opening the APK file.