Because standalone Alpha builds are not hosted on the official Google Play Store, you must rely on third-party APK websites. Modifying your device to install outside files requires caution. Step 1: Enable Unknown Sources
: Some larger versions of the game might be distributed as an XAPK file, which bundles the APK with OBB (game data) files. You will need an XAPK installer app from the Play Store to install these files. Hello Neighbor Alpha 3 Android Apk