Like my old man used to say: if there's no news, make some
up. So with absolutely no factual piece of information to base my assumption upon, I shall set forth and theorize that an anime version of
11eyes is all but inevitable. Originally a PC eroge from 2008, 11eyes will be releasing this April 2 for the Xbox 360, under the title 11eyes CrossOver. And here's the kicker: its producer 5pb. has already had mostly all of its previous games turned into anime:
Night Wizard,
Chaos;HEAd,
Prism Ark and Memories Off.

And to see why an anime version would probably turn out better than all the other titles mentioned above, today I added some pictures in the game's local
gallery, along with
two trailers. Looks and sounds brutal enough for some "bad end" / "nice boat" fun. Below is a general story outline, via
VNDB.
"Kakeru lost his older sister five years ago. He tries to get back to normal life, but he still lives a vacant life. He has a childhood friend, Yuka, who goes to the same high school. She always tries to cheer him up and he gradually gets better.
One day all of a sudden, the sky turns red and the moon becomes black. Everyone besides Kakeru and Yuka disappears and monsters start roaming the streets. All they can do is just to run away and hide. A while later, it all gets back to normal. But when they start to think its all passed the Red Night happens again. They find out that there are four more humans who get involved in this mysterious phenomenon. They get together and try to survive, but six shadows appear in front of them..."