We have recently changed the way the high score tables appear in the game. This was due to the occasional inappropriate name turning up that we couldn't remove for technical reasons.
So we have decided to change the high scores to eliminate this as much as possible. However, with the change we have had an unforeseen problem crop up. Instead of just showing the high scores from our site, it is showing the high scores for everyone in the world, which makes it quite a lot tougher to get on the scores at all!
However, we are looking at fixing this now, it's just a bit trickier than we anticipated, so please bear with us! We will not stop until we have it with just our scores and no rude names! Huzzah!
Update 11/2 Scores have been reverted to the original Mochi scores while we complete a brand new shiny custom high score system that we will have full control over! Yay!