Harry Potter Math Game To play, click on the green flag. This is a 3 player game. You can play as Harry, Hermione, or Ron. Answer a question correctly and you get a turn to spin and move across the game board. If you get it wrong, you don't get to move. The first player to the finish line wins. You can change the questions if you click on the Dumbledore sprite. The default questions all have the same answer ;)