Why 195 countries?
Ask how many countries there are and you will hear 193, 195, 197 or more. The answer depends on who you ask, and some of the differences are bitterly disputed. A geography game cannot avoid the question, because every country question needs exactly one right answer.
So we picked one neutral rule and apply it the same way everywhere: the member list of the United Nations. That is 193 member states, plus the two permanent observer states, the Holy See (Vatican City) and the State of Palestine. Together that makes 195, the number most schoolbooks and atlases use.
What that means in the game. Only those 195 are ever the answer to a country question. Places that are not UN members, such as Taiwan, Kosovo or Western Sahara, are drawn as our map data shows them, without changes of our own.
Borders and names. Borders come from Natural Earth, a public map dataset, unchanged. Country names use the short name people actually say, such as Czechia or Vietnam.
This is not a statement about who should be a country. It is the one standard that lets the game stay out of the argument.