If you like music and played Audiosurf before, then you’ll just need to wait a couple months until Empty Clip Studios releases the newest puzzle-rythm game Symphony.
All the game requires is a music collection on your computer and it will do the rest. Like Audiosurf, Symphony turns a slow paced song into a relaxing shooting puzzle and a fast paced song into a massive shooting gallery.
The game is a couple months to be released so you can expect a new way of entertainment in 2010. Hit the official site for more info.