On Android device, navigate to 'Apps' > 'Settings' > 'Security', enable 'Unknown Sources', then tap 'OK' to agree to enable this setting. This will allow the installation of third party apps and standalone APKs.

Enable Unknown Sources: By default, Android devices only allow installation from the Google Play Store. To install an APK, you need to enable "Unknown Sources" in your device settings. Go to "Settings" > "Security" or "Privacy" > "Unknown Sources," then toggle the switch to allow installation from unknown sources.

Building on the Call of Duty4: Modern Warfare engine, Call of Duty: World at War thrusts players into the ruthless and gritty chaos of WWII combat and challenges them to band together to survive the most harrowing and climactic battles in both the European and Pacific theaters.

Call of Duty returns to its roots with Call of Duty: WWII a breathtaking experience that redefines World War II for a new gaming generation. Land in Normandy on D-Day and battle across Europe through iconic locations in history's most monumental war.