Update v1.0191:

Those Who Remain received a devilish free update on Steam, and locals have reported the appearance of menacing jack o' lanterns, but who knows what else may be lurking in the shadows of Dormont... Take to the streets of Dormont once again, and see what horrors await you as Halloween twists the shadows into something darker than before.

 

Update v1.019:

Blue wave of light on the menu.

White / red waves of light on the intro and loading screens, respectively.

Orange wave of light when flicking light switches.

Green wave of light when opening doors.

Red wave of light when shadow people are near.

Solid red when the player is killed.

Rainbow flashing lights when a monster is chasing.