MapPuzzle offers a dozen puzzles to complete. You can complete a puzzle of the whole world, puzzles of regions of the world, and puzzles based on the U.S. states and Canadian provinces.
Watch this short video to see how MapPuzzle works.
Applications for Education
MapPuzzle doesn't require registration in order to play. In fact, there isn't even an option to register on the site. You can play it over and over by just clicking the reset button. For these reasons it could be a good game to list as a practice resource on your classroom website or in the "materials" section in Google Classroom.