Boundary Block

Boundary Block (or sometimes referred to as Edge Block) is a ghost block in Pixelshift. They are 64x64 wide and have black and yellow stripes on them, like a warning barrier in real life.

Generation
Boundary Blocks only generate at the edge of the map, which is four million pixels out. It has no purpose other than to mark the edge of the map. Once the player passes 4,000,000 pixels, they will be greeted by Boundary Blocks that keep on going infinitely.

Physics
These particular blocks, apart from generation, have no physics. There is no possible way to walk on them other than to hack the block itself and change it's behaviour.