1. Download APK first, then copy to your Android device's SD card

2. Install APK, DO NOT open app

3. Download obb files, then rename to 'main.23.com.auer.billion.lord.free.war.cartoon.dungeon.obb'

4. Copy obb file to /SDCARD/Android/obb/com.auer.billion.lord.free.war.cartoon.dungeon/main.23.com.auer.billion.lord.free.war.cartoon.dungeon.obb