Another random graph (and it’s Mario Kart)

Question

This graph shows the number of Mario Kart players registered on MKLeaderboards by country.

I forgot to label the legend, so here it goes:

White: 1 to 3 players

Blue-white: 4 to 9 players

Blue-green: 10 to 29 players

Light green: 30 to 99 players

Green: 100+ players

I also find it interesting that every country in Africa has 1 player except for South Africa, which has 5 players.