Understood, I tried it out and I have to say that I already loved the game.
Another big question for ya, will I have to uninstall the current version when the next update comes or will it update automatically?
Pretty sure for .apk files, since it's just the file that will install an app onto your phone, it will give you an update prompt when you download a new .apk and try to install a new app through it if the app name is the same as the old one.
tl;dr: No, you won't have to uninstall it, lol.
Though uninstalling the .apk file is fine since it's not the app itself.