I do have to say one time i was there (knowing the glitch for years now) and it was similar to the layout of driftwood like always. But instead of exiting the game within a minute or so, i decided to stay for a while since i was bored. After a while, the island dissapeared under my feet and it turned into me walking on air and I could see the moon, as it was night. But as I stayed, the moon started to dissapear... then I logged off because I got bored and wanted to level with chalupa. I managed a few screenies though, not knowing this thread existed.
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I would love to investigate this further, it sure is odd! Too bad I didn't get to see old port royal, i really miss it.
P.S. Could this be a slideshow of all of POTCO's maps old and new?