move your mouse to look in different directions in the tunnel Play on Turbowarp For Better Performance https://turbowarp.org/1390201507
This is an illusion. How it Works: lots of clones are on the edges then these clones use pen and pen down and they set their x to 0 - mouse x and sets the y to 0 - mouse y and then erase all after, and then it repeats going back and forth if you don't understand this then feel free to see inside and look to see how it works.
