Haha, leaderboard is probably a missleading title, it's local only. Thrown controllers is meant to be played with a crowed of people, where new players come in whenever you fail a question/challenge. The leaderboard only tracks the top players for everyone that has played in a single game. The leaderboard will update as players enter/fail the game, but if you're playing on you own it's not good for anything really. Also you have to be currently playing the game, on the panel select scene for the leaderboard to be accessible.