This future contract pays 1 DKP for each 10,000 units of Dragon Quest Swords: The Masked Queen and the Tower of Mirrors (Wii) sold in the US in the retail month of February 2008 according to the NPD Group. This retail month runs from February 3, 2008 to March 1, 2008. This contract expires at 11:30 PM PST on March 12, 2008.