I'm a sucker for old school snake games. Being able to go off the screen made it easier at first, but later that aspect made it easier to crash into yourself. Interesting twist.
Code seem well-executed. Thanks for the music mute button on all screens. Instead of showing the solution, perhaps the Help button could show one or two of the digits?
Change the pants color so they don't blend into the sky. Mute button needed. Altimeter is out of whack--shows the guy at -3 feet when he's almost hit the ground.
So, what's it do? Mouse and arrows don't do anything; screen just flashes.
Also, learn about your target audience--Kongregate is an English-language site.