What do you think is the #1 monster in the Frictional Games Penumbra & Amnesia?

[The Rock Worm]

A flying monster would be terrifying if done well!

Exactly my thoughts! Now the question is what kind of flying monster? I've heard of, at least, two flying monsters in the Lovecraft world. The Mi-Go, servants of Shub-Niggurath (images of the Mi-Go from Fantasy Flight Game's 'Call of Cthulhu' to give an idea on looks here http://jarling-art.deviantart.com/art/Mi...m-38344323, http://www.fantasyflightgames.com/ffg_co...-scout.png, http://www.fantasyflightgames.com/ffg_co...server.png)

Now none of those images are mine, but they do show off what the Mi-Go looks like. They're the 'scientists' in Niggurath's group. Would these guys, or something like them, do?

As I've heard of them from "At the Mountains of Madness", they can't swim, but drove the Elder Things from the land back into the see.