Show HN: A fast paced multiplication game with an international leaderboard

The leaderboard ranks every country by average score, which then can be dissected by state/province/prefecture. Uses modern teaching techniques (immediate feedback, positive feedback, proof of growth, rewards practice not just perfection). Campaign mode for infinite number board expansion. How high can you get? Once I get enough data, I plan to offer fun statistics in the leaderboard like: "Congratulations! You outscored 46% of 10-13 year old Danish people" "Congradulations! You are better at multiplication than 867 70-80 year old Mexican individuals"