Screen Overlay

Generally, this was popular in the Early history of videogames when displays (or just light bulbs) did not generate colors (perhaps even binary color) or complex graphics (sometimes no more than a dot, or two, or even a full line or basic shape in rare cases). Early arcade games sometimes used monochrome displays covered in colored tape. However, anything a developers chooses to instruct the player to cover the display with, in part or whole, for whatever reason, would be a Screen Overlay for the purposes of this group. For instance, all Home Computer Software Super Micro games are binary color with overlays built into the cartridge-screens.