Great quiz, I've been looking for this kind of adaptation for a while! I'm glad to see someone do it.
A shame that the keyboard shortcuts are still enabled and advertised - I understand the next/prev. country shortcuts, but I feel you shouldn't be able to type for a country.
Pretty easy considering all the flags are ranked alphabetically (Algeria at the top and Zimbabwe at the bottom). If you know the name of the highlighted country, its very easy to find the corresponding flag with this information.
The Golf of Guinea is nuts, flag-wise...
A shame that the keyboard shortcuts are still enabled and advertised - I understand the next/prev. country shortcuts, but I feel you shouldn't be able to type for a country.
Two issues, Eswatini / Swaziland, and as others have noted, a randomised flag order would make it even trickier