WASD or arrows key to move ,click to shoot When you passed the "world of border" (Arras.io or Diep.io Grey border) and trying to explore, you met a undiscover triangle. This triangle has been stayed there for many years. It was coming you slowly...
Special thank for @z123w, most of the codes are provided by him This is may a final version... NOTE: may unfinish (I don't know) and may some issues.
