I asked this question yesterday which was quickly closed for being "dependent on a specific point in time": https://gaming.stackexchange.com/questions/17560/what-is-the-most-succesful-profitable-game-that-was-based-off-a-movie
But how is that more time sensitive than this question, which remained opened and was allowed to get answered?
Although this sale theoretically will happen every year, it also starts on different days, and so the question will have to be updated yearly.