I almost gave it 4 stars, but realized for $2 I really can't complain. A little choppy at times, not sure why and with no controller detection you'll need to use extra software to assist with that.
It's not perfect BUT the magic of Jack Black and heavy metal rock n roll shine bright in this timeless masterpiece of a video game. I got it on sale too, so that was a bonus. I dig this game and highly recommend it to anyone.
I haven't finished it yet, but just the piano at the beginning menu screen is so epic and the nostalgia felt in every mission is so cool. I love this game!