Updated in RED several games I've tested.
Also a note....
In Fam20, if you just LOAD, not even enable. A tall vertical screen game, it will reformat ALL games for a vertical top screen.
This "can" be helpful as some games that aren't actually formatted that way, such as Dark & Stormy, do look very good with a tall screen.
But at the same time, many games that get reformatted like this are switched to vertical, but look smushed.
If you load a tall game and it reformats all games for a tall screen, whether designed for it or not. You can revert it to a normal top screen by removing the game you loaded that's for tall vertical top screens and rebooting.
So it's slow, but make sure you know what games you add (not enable, just load). So if it reformats all the games to a tall vertical screen, you know which one to remove to put it back to a normal top screen.