Darkness

Darkness

Usage
 ==  " A remake of the old Black Goo. Just as unstoppable, but this time is created as part of Tumor. Tumor serves to insulate it from the other, natural blocks, but if containment is breached... Game over, buddy. Red cannot stop it, but orange walls and green blocks can. If enough Darkness forms, it starts to evolve into Plague.

 Instead of growing to blocks next to it like other goos, this one throws itself great distances from the starter block. Dangerous. Only purple-red can halt its advance, or a 15 block thick wall of Orange-Red. "  - stevenrs11