Red infection

Red infection is a tile in the Factorio system categorized as a decoration; it is a decorative ground tile named "Red infection" used to alter terrain appearance and does not provide production, resource, or functional gameplay effects. As a decoration tile, Red infection is applied to the map surface to change visual style and terrain coloration and connects only to other tiles through normal tile placement rules; if no further structural data is available, it should be treated solely as a visual/ambient element.