Fez – How to Lower Water in Lighthouse Area and Main Warp Room

The 16-cube area is the ancient version of the temple/science warp zone. That QR code was under construction long ago, but it now appears "fully realized" on the same wall in the temple/science warp zone. So it can be completed—indeed, it has been.

If you're curious, the QR code links to...

text: "RT RT LT RT LT LT LT RT" (which triggers an anticube, as shown above)

This is a higher resolution of the screenshot, from the PC gersion of the game:

I have then extracted the QR code, converted it to black and white, removed Gomez and some dust, and applied a median filter. This is the complete QR code, which you can scan on a website.

This room is an alternative to the "blank map" QR puzzle for those without QR readers. They both result in the same tetromino code, but if you do one, the other will count as "completed". Thus, this puzzle is optional. (The difference: the code has to be entered as if it was found in this room unless you have the blank map.)

The tetromino code is shown in two places in this room: in the S- and Z-blocks around the tower's base (loop once), and as the fezzes atop the alien drawings at the owl's feet (only visible in first-person mode).

The code:

RT RT RT LT RT RT RT LT