I really liked the music and the visuals (I'm a sucker for pixel art). The idea is also very nice, and the controls are confusing but in a good way (I was pressing the wrong direction in the beginning, but in the end I was rotating and running like crazy).
I do think that the map is a bit empty. The colorful.. clouds (are the clouds?) help to hide that fact, but most of the game is spent walking around. It helps you get used to the controls and enjoy the music and the randomly placed worms (which are adorable), but it gets a little boring after a while.
Apart from that, great game!