Can you tell which countries are missing from the map?

New Zealand Prime Minister Jacinda Ardern and Flight of the Conchords comedian Rhys Darby are trying to solve a mystery.
Why is their country always being left off maps?
From Guinness and Nutella adverts, to the United Nations logo and even a water feature at Universal Studios - New Zealand isn't there.
So they've started a campaign to get people to "#getNZonthemap".
Would you even notice though?
See if you can figure out which countries have been erased from these maps.