HIDDEN FACE- HALF-LIFE: BLUE SHIFT
The Blue Shift expansion pack for the first Half-Life title features a pretty creepy easter egg, and it’s not all that easy to find. At a certain point in the game, players can climb on top of one of the air vents. When you get to the top, if you crouch down and shine a light into the vent opening in front of you, you can see a a strange face with huge eyes staring back at you from the darkness.















