Im trying to install the Apk version but everytime I do it just ends with App not Installed. Any idea how I can install? I tried signing the app and the installing process actually moved and installing this time but it always ends uo failing with the App not Installed message. Anyone knows the problem here? Ive still got lots of free space.
There is a mobile and a tablet version try tham I had sometimes problem with it too if none of tham do not want to be installed try to delete ravager installed apk (if you want to update) (+make a copy from your saves if you dont want to lose tham) or factory reset for your phone (its work sometimes but not important to do it) these things what worked for me.
Are you trying to update or install fresh?
While not with this game specifically i noticed that sometimes the old versions causes trouble when installing an apk. If you have an old version installed try uninstalling it and if that doesn't work relocate the save files (so you still have them in case even this doesn't work, but they aren't noticed by the installation program) the folder should be under /android/data (called "com.fourminutewarning.ravager) just get it out of android (I put them into downloads when doing this)
Other than that I could only think of the possibility of maybe your device not being compatible (and maybe getting the tablet or phone(mobile) version mixed up, which was already suggested as possibility)