Whilst Game Launcher claims that apps will still show on the home
screen, for me they didn't show and anything I tried to display them
failed. My solution was to uninstall all the games, disable and force
stop game launcher, then reinstall the apps! ...
I put my games on Game Launcher rhen decided I didn't want to use it
anymore. I removed all the games then disabled it and forced stop,
whilst my games are still on my.phone (s7) they are not in apps making
it difficult to access them!
I tried that but the apps still didn't show. I could only find them by
searching. When I disabled the app they still weren't showing.
Consequently the only solution was to uninstall all the games as above.