@cod if its the one I think it is, that one stumped me for a bit because the solution was different to any of the puzzles that came before it. Still perfectly fitted with the worlds logic though.
@cod One or two of the puzzles are a bit finicky, but it does make you feel smart for solving them. Oh yea, intruders is just a short game, you finish it in about 2 hours. I bought it at a deep discount just to play in vr.