10

A neat idea, and gets tough after 10, esp. at the borders.

How far does it go up?

That, my dear sir, is a mystery~

Interesting idea. I liked the music and the way it builds up as the levels go on.

As johnl said, very interesting concept. I like the building of the music. It's hard to read and not lose the focus. I lost 4 time already :P always at level 7. Gonna try again ;) Good work !

Nice music! Artistic entry.

Very nice music, found the game interesting. I featured it in my Ludum Dare 27 compilation series, if you'd like to check it out :) http://www.youtube.com/watch?v=UVlJsYHr1MU

Great ambiance, it's almost meditative..

But then it gets faster haha. Cool game!