This is important: We found a problem with recent Android Oreo updates: The system allowed RetroX to install one or two emulators then stopped installing anything else. The behaviour that you can see is that RetroX will prepare to install an emulator and then it does nothing, or sometimes the install window is seen on
A new feature has been added to RetroX to allow using different user interfaces for the same application, this is known as Themes. The main focus of RetroX has always been to make playing retro games the as easy as possible, just select one game and RetroX will do the best it can to run
The Oreo release of Android broke several emulators and most of them have been fixed up to this date, but one particular exception is the Amiga emulator (UAE2All2) which will require more time to fix, or as an alternative, be replaced by a new emulator. Some fixes in Oreo made some hidden bugs become evident