The Windows are entities that resembles fake windows with a shadow behind the window. The Shadow, the window

and the endless void behind it are all the same entity, waiting for a person to walk into the window and open it

so the shadow can pull him into the infinite abyss inside the window only to be stuck there forever to suffer

a unknown fate.

The Windows usually appear in levels like Level 4 and Level 188, but any level with windows has the possibility of at

least one window being one of these fake window predators.