Guide Nyan cat through the tunnel!
NyanTunnel is a simple copter like HTML5 game. It is a packaged app so can even be played offline. Although if you really need it, an online version is available: http://wolfy87.github.com/NyanTunnel/
All you need to know is that holding "u" goes up and "p" pauses the game. The rest is fairly self explanatory, don't hit the walls.
The project is open source on GitHub, so feel free to report bugs or contribute. Here is the GitHub repository: https://github.com/Wolfy87/NyanTunnel
This game is no Battlefield 3, but it is my first ever game and it was intended to be fairly simple.
Oh, and yes, the music is included.