Name a country and it prints whatever it shares with the hidden flag.
How to play
A flag is hidden. Name any country and its flag is laid over the hidden one.
Wherever the two carry the same colour in the same place, that colour stays printed.
Eight guesses. The flag builds itself out of the countries you got wrong.
The percentage under a guess is how much of the flag it uncovered that was still hidden, not how close it came. The right country can show a small number, because most of its flag was already printed.