If you are looking to install the file on an Android device:
Locate the downloaded ChristmasEve_v4.0.apk file in your Downloads folder and tap it to begin the installation. Christmas Eve [v4.0] [APK]
Go to your device's Settings > Security (or Privacy ) and toggle on the option to Install apps from unknown sources . If you are looking to install the file
Always verify the file size (typically around 2GB) to ensure you are not downloading a corrupted or malicious version. Christmas Eve by Jonesy - Itch.io Christmas Eve [v4.0] [APK]