WOW!! There must have been an epidemic of missing Fathom topper pieces...My set is also missing the island. My game came with the new set of plastics when I got it (so I didn't buy it directly) and my game was already torn down for restoration that the previous owner was planning but never got around to. So I finished it and put it back together...I was fairly disappointed when I went to put the topper together and was missing one of the main pieces. I just thought that it had gotten lost in transporting and storing the game. I did think it was odd that the package looked to be in good condition and couldn't figure how that large of a piece could've fallen out...I guess I now have the answer...

Phoebe