Default Why is Asphalt 8 taking up so much space?

I have a Moto X 16GB with Asphalt 8. I tried to install the 1.50 update today but it didn't install with error that said insufficient space. It now takes up 2.8 GB while it used to take up 1.4 GB and it hasn't even updated. My hunch is that it kept the APK file but didn't install it. Is there anyway I can get rid of that APK file?

P.S. I have a rooted phone but write protection is still enabled.