@NN: Room, space or some kind of bounded enclosure without exit or windows - though I reckon VDUs, false windows or windows onto nothingness, outer space that kind of thing would be ok. My thinking was that characters would not think that they could climb through or sensibly exist on the other side. They have to be sort of trapped in this space.

@mearrin: Cool. I don't remember that one but I know it had all sorts of strange rooms in that one. But yeah, map a take on that room if you like.