I was astounded at the fact that you managed to make not only a 3d game - but an actual 3d game instead of just a 3d rendering of some rays. The visuals of each room were really cool, and the gentle music was a nice touch. To be honest though, it wasn't super fun. I enjoyed walking around for a bit, found a locked door, and kept exploring for a key afterwards, but got a bit bored of looking. The polish though was on point, transitions, fog, etc, all made it look and feel really mysterious and cool!