Super cool I didn't get it at very first but quickly caught on and really enjoyed this entry! Very cool that the bullets are different and have their own upgrade paths. Seems that the iframes are forgiving and almost seem to overlap enough to chain a bunch of safe ones together in a row? I was able to survive longer than it seemed like I should doing this but all the same I had a great time playing this one! I like the bullet time a lot too when shopping, nice touch!