Second Sight Easter Egg - X Space 92

on the mission where you have to find Jane in the asylum you should in some point pass a guard watching a door hat you activate surrounded by patient rooms kill the guard go in the room u should see a shotgun above the shotgun u see a blue square looking thing on a shelf you cant reach use telekinesis to knock it down then pick it up it says disc take it to the computer when your on the computer click disk drive 1 it should show an icon of a spaceship click it and it takes you to a game similar to "space invaders"