User blog comment:PrinceGoldenGale/My review on Angry Birds GO! v2.0/@comment-30303776-20160703030455

(reply) Oh, I have seen it already. I didn't install it on my phone due to lacking of storage space.

First, you need to backup the game. Use any app backup restore to make into an Apk file.

Use the archive extractor. For my case I had use FX File Archiver. Download any extractor from the Android Play Store. I think it will be better to extract below version 2.

When you get the AB GO! folder, navigate to assets/data/audio. All the sound files are there. There are fonts too.