This is fun! I can identify all mainland countries but have really hard time with the island nations in Oceania and the Caribbean. Would love to have an option

This is fun! I can identify all mainland countries but have really hard time with the island nations in Oceania and the Caribbean. Would love to have an option to select which specific area I want to practice with. Also for countries that I can identify with first click, I have to keep clicking until the cycle is complete. It make sense to zoom and ask to identify the countries again, but maybe stop after getting it right continuously ~3 times?