Valve has launched a limited-time sale, the Midweek Mystery Sale, this one offering great discounts on a range of mystery themed games. From Now to Friday February 13th steam will be having a great sale. You will be able to buy games starting at $2.50. The sale also includes up to 75% off 40 game titles. This is a huge midweek sale that has taken place February 10th will include games such as Alan wake for $15 which is a good discount. The sale will also include games such as Wolf among us for only $12 with a 50% off discount.Max Payne 3 and L.A. Noire for $5, and Puzzle Agent 2 for $2.50. Head here to see the full list of games on sale this week for the Midweek Mystery sale. The sale period officially ends February 13 at 10 AM PDT/1 PM EDT.