Support for Split Application Binary (.OBB)

Under Player Settings | Publishing Settings you'll find the option to split the application binary (.apk) into expansion files (.apk + .obb).

This mechanism is only necessary when publishing to the Google Play Store, if the application is larger than 50 MB. See http://developer.android.com/guide/google/play/expansion-files.html for further information on APK Expansion Files.

When the Split Application Binary option is enabled the player executable and data will be split up, with a generated .apk (main application binary) consisting only of the executable (Java, Native) code (around 10MB), any and all script / plugin code, and the data for the first scene. Everything else (all additional scenes, resources, streaming assets ...) will be serialized separately to a APK Expansion File (.obb).

The Split Application Binary option is not the only way to split an .apk into .apk/.obb (other options include 3rd party plugins/asset bundles/etc), but it's the only automatic splitting mechanism officially supported.

Downloading of the expansion file (.OBB)

Page last updated: 2013-03-14