Your job is to tilt the phone to and fro, guiding the balloon on its increasily speedy journey. If you get to the bottom of the screen, you've timed out. A clock keeps track of the time in corner of the screen, which inexplicably gets your heart racing. Great for older children, although little ones can figure it out as well (there's an Easy/Hard setting).
You'll like it because: It's elegant, unexpected, slightly strange and unique.
Too bad: It is either repetitive or addictive, depending on your mindset.
iPhone Apps users gave it 3/5 stars