You are playing Hide and Seek with a specific group of countries. You are the seeker. Start guessing country names to try and find out which ones are hiding from you. Then, you must guess what all those countries have in common (e.g. in the names, flags, geographic location, etc.)
Evil aliens have decided to kill everyone on Earth! Fortunately, they've given you two minutes to save as many as you can. All you have to do is name a country to save everyone in it.