Saw this on Macrumors, 50% off some of the best iOS games currently available. The Australian store just says 'for a limited time price' so I have no clue how much we save in Australia, but the US store is 50% off. I just checked Limbo which is highly regarded and its from $6.49 down to $2.49.
No idea how to post a link to iTunes listing but I have attached the screen shot from the app. The Macrumors article is HERE
Awesome deal! Recommendations?