Barefoot_Monkey: Cool, Amnesia: The Dark Descent is
80% off at Desura for the next 12 hours. I'm seriously considering getting it.
edit: I see it's been on sale since Halloween so it's probably been mentioned already.
Actually it wasn't on sale on Halloween (on Desura I mean):
"... like most Australian's we totally missed Halloween (it isn't that big downunder!) but figured it is never too late to run a quick 2 day sale for a spectacular game (and also promote a kick-ass free mod). Don't worry we have already marked XMAS in our calendars and don't intend on missing it!" The article date is from the date of Halloween but it must have been added retroactively because I checked their site during that date to see if they would be having Amnesia on sale and they definitely didn't. Every other store (Steam, GG, dev's own store...) had it on sale during Halloween though.
It's a good game with some clever puzzles. I just finished it a couple of days ago and it was definitely worth it. I think I liked Penumbra a little more but not by much.