Ok I've installed the other game but its still not there..is it getting confused by another app now? Xd
Just the Appstore, and then use long press on this app's apk in your files and choose open with it'll give you other installers to choose from, pick any other then the default one, it'll open the app that this one is confusing with exit and uninstall it to install this one (or wait for a update that fixed the issue)