Who’s there?
Today Knock Knock, the unique survival-horror adventure featuring puzzling mechanics as well as original cartoon graphics has made its way to Good Old Games today and is available for 20% off for Windows and Mac OS X.
That translates to $7.99 and even comes with extra goodies like 4 additional music tracks and 8 pieces of art that are exclusive to GOG buyers as well as several other additional things. Grab the game here.
