It reminds me of the novel Farewell horizontal by K. W. Jeter, and also of the movie Cube for some reason. Anyway, in my opinion this one conveys the best the concept of isolation in your entire series of scenes on this theme...
Thanks a lot. I know of course the "Cube" movies, the novel by K. W. Jeter I have to check but the title sounds somehow familiar, hmm, from 1989, so I might have it in my library...