Help with Extracting APK android app Unity 4

[Orion_Pax_3]

Hi everyone! 

I really hope im posting this in the correct channel, anyways i have been trying to extract an Android game which was released back in 2014. its a simple storybook app, but the images used for the characters are unreleased renders, which i would very much like to have! Unfortunately i just can't seem to figure out how to open this APK and view its contents. 

I already renamed the .apk to .apk.zip to open it in explorer. Then i took the sharedassets file that i found within the .zip file and opened it in assetstudio. Thats it, but there is nothing in there except for some general font, monoscripts and a bunch of things unrelated to the game itself. the character renders which should just be 2d textures are nowhere to be found, this game was made in Unity4 in case anyone was wondering. this .apk also doesn't open anymore with emulators like bluestacks or NOX. Due to an error something to do with ''paid media'' 

Anyways  I really hope anyone could offer me some much needed new insights as its driving me nuts!

[saratogaroad]

Well, firstly, you didn't need to rename the .apk file. If you install 7ZIP, you can right click on the APK and extract like any other .zip file.

Secondly, there are two kinds of .apk files. The first is one where everything is in the apk itself; models, textures, sounds, etc. Everything is pre-downloaded and pre-installed when you get the apk from the Play Store; Disney Mirrorverse is one such .apk. The second is where the game downloads things the first time it's launched, or streams the assets to your device as you play. If you couldn't find a large folder of assets (sometimes it's called assetpack) within the apk, or if the size of your apk is less than 100MB, then this apk is likely to be the second type and you would absolutely need to run it on an emulator and move the files out of the emulator's file structure, or on a rooted device to then transfer the files to your computer.

Forum rules are that you can't link to .apk files/sites, but what's the name of this app you're trying to rip from?