They can crush.
So watch out.
How long can you live?
Use the arrow keys to move the circle, and avoid the four crushing walls. Collect power ups to help (or hinder) you: shield and speed.
Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0
Whatever you do, do not use Turbo Mode... but you probably will now that I told you not to ( ͡° ͜ʖ ͡°).