Yah, I got your flipworld sitting on my desktop. Wanted to see if I could use it for the camera switching I have in Zephyr. But got side tracked with the door, and clickable sounds.
Pretty cool. However, because the corridor is totally in the dark I thought at first I was missing something, so I had to open the blend file to see that I had to turn right. (BTW, thanks for providing that file makes it much easier to study things)