Each cell contains a different Asian country according to Sporcle standards. This puzzle uses Timor-Leste and not East Timor plus Timor-Leste is considered 2 words. 'The' is not considered a word in any country's name. An unique letter means the only Asian country to begin with a particular letter. Qatar is unique since it's the only Asian country to begin with 'Q'. An island country has no territory on a continental land mass but may share a land border with another island country.