I have included support for an external tool that can pack and sign APK files faster than using the normal tools. This support is only enabled for 5.1 and is activated by copying the appropriate tool into the Unity BuildTargetTools directory. So if you are brave and want to experiment with faster APK creation, download the tool (fastzip) from here: https://drive.google.com/open?id=0B...U1VM09JbDFEdWE4VnNLOEYtN2VBRUhSS2s&authuser=1 And copy the executable here for Mac OS X: <UnityBeta.app>/Contents/BuildTargetTools/AndroidPlayer/ Or here for Windows (64 bit) <BetaDir>\Editor\Data\BuildTargetTools\AndroidPlayer Now when you Build an APK from Unity. It should say "Fastzipping everything" during the APK creation phase, and that should be relatively quick. This process is NOT very well tested, so if you have some issues, just remove the tool and the build should work as before again.