I created a small trivia game called KnowThatSpot based mostly on pictures from this site. It’s as simple as recognizing the location or landmark seen in the picture and choosing the correct answer from the four possible answers. You can keep answering questions until you make your third mistake.
Questions appear in random order, and not all questions are at the same difficulty: anyone recognizes the Eiffel tower, the Colosseum or the Great Wall, much fewer will recognize Ayers Rock in Australia. I keep increasing the pool of questions daily.
Each correct answer gives you 1 point. If you get enough points, you can get on the hall of fame