Firstly, a simple explanation of what the Rook is, or was, last time we heard about it. From Glitch's blog, stoot describes it as "a collective noun referring to the evil, crow-like creatures who exist on the same plane as the Giants and are constantly buzzing at them, dive-bombing, attacking and trying to eat the Giants’ imagination. The Rook is dark and opposes all creativity. And they will try to attack the game world, especially locations which are left a little too neglected …".
In a test in October 2010 (almost half a year ago!), Stoot gave us the opportunity to test out The Rook in a street. It was laggy and buggy, but fun to try out. Rook ravens appeared on screen, animals became 'Rooked' and we fought it off with hugs and donations. See my screencapture video here: http://www.youtube.com/watch?v=mi2ZuHm7H2w
Afterwards, we gave our feedback on this thread, and Stoot explained: "I think we're going to try making it slower, sparser and more ambient ... an indication of long term decay in a region that might take days or weeks to fester before it is really annoying (and days or weeks to clear) rather than something that happens all at once.".
I'm keen to know, Glitch devs, where the Rook is in terms of playability now. That was half a year ago, so, just wondering. :)
PS. Rook Wiki article link ;')