How do you have Unity export an Android game into multiple files. Google Play Store only accepts 50mb max for the first file…
There is already a lot of topic for this :
http://labs.exoa.fr/tutorial-unity-4-apk-splitting-google-play-obb/
http://forum.unity3d.com/threads/111220-How-did-Shadowgun-reduced-APK-to-6-MB
http://forum.unity3d.com/threads/129042-Android-Builder-Tool?p=871925#post871925
I hope those links can help you to find your answer ![]()