We've posted about Big Fish Games before. It's a casual gaming company that has produced a ton of titles for the PC already, and it's in the process of both bringing those over to iOS and creating an original library of titles for Apple's mobile devices. This weekend, Big Fish is having a sale on the App Store, with nearly all of its titles dropping down to just 99 cents on the iPhone and US$1.99 on the iPad.
So now's the time to pick any of these up if you haven't yet. If you're not sure which one to get, Haunted Manor is a good choice. Like a lot of the games, it's sort of a puzzle/adventure title, using casual interactions like hidden item and mix and match