I've released a tool for editing mazes. This will let you make a maze while showing you as you go what the score will be - this makes it a lot easier to see what a modification does than waiting for the mouse to walk through it. Then you can come back here to enter it and get your score.
http://sites.google.com/site/smestorp/mousemaze.zip
I've shown this to some people here (trying to stir up some competition), complaints about the annoying speed are unanimous. Fast-forward button is recommended.
No comment.
Also, can we have more graduations of colour? Maybe after it goes yellow it could go red or something. Currently there's no way to tell 100 from 50.
 "Mouse Maze"){kind=icon}