Very good concept, I LOVE first person immersive sim type of games. The movement is pretty nauseating, it kinda feels like controlling a car? Like turning has acceleration to it and whatnot. Also the physics framerate is much lower than the camera, so moving around gives everything a sort of blur to it, hard to explain. I love the environmental models, the blocky/lowpoly art style is one of my favorites. I also love being able to interact with the environment in various physical ways, like turning lights on/off, knocking the lamp off the boxes to shatter it, playing the radio in the laundry room (I love Portal, too). Overall a VERY interesting and enjoyable experience, 9/10.