May 2010 NPD Sales Data

• US Hardware in May 2010

  Title	Actual units	Expected units	% From Expected
  Nintendo DS	383,700	443,200	-13.43%
  Nintendo Wii	334,800	397,500	-15.77%
  Xbox 360	194,600	208,300	-6.58%
  PLAYSTATION 3	154,500	193,400	-20.11%
  PlayStation Portable	59,400	72,400	-17.96%
  Total Hardware Units	1,127,000	1,314,800	-14.28%

• US Software in May 2010

  Rank	Title	Actual units	Expected units	% From Expected
  1	Red Dead Redemption (Xbox 360)	945,900	737,800	+28.21%
  2	Red Dead Redemption (PS3)	567,100	418,200	+35.60%
  3	Super Mario Galaxy (Wii)	563,900	922,200	-38.85%
  4	UFC 2010: Undisputed (Xbox 360)	221,100	299,400	-26.15%
  5	UFC 2010: Undisputed (PS3)	192,300	207,600	-7.37%
  6	Wii Fit Plus w/ Balance Board (Wii)	--	--	--
  7	New Super Mario Bros (Wii)	183,000	--	--
  8	Alan Wake (Xbox 360)	145,000	246,000	-41.06%
  9	Pokemon Soulsilver Version (DS)	141,000	--	--
  10	Skate 3 (Xbox 360)	--	--	--
  	Total Software Sales	$446.3M	$620.1M	-24.80%

The market also tracked the sales of Prince of Persia: The Forgotten Sands (Xbox 360), Prince of Persia: The Forgotten Sands (PS3), Lost Planet 2 (PS3), and Lost Planet 2 (Xbox 360), which did not make the top 10. These futures will be rolled back.

Where do the expected sales numbers come from?

The simExchange is the video game stock market. Gamers and developers sign up on the simExchange for a free trading account. Using fantasy money, players buy virtual stocks in video games they believe are under-predicting sales and short sell stocks they believe are over-predicting sales. This concept is widely known as "the Wisdom of the Crowd" and this system is known as a "prediction market." Sign up and play today.

About the predictions

Predictions on the simExchange should become more accurate over time as (1) the diversity of the pool of traders increases and as (2) more accurate players are rewarded with more virtual currency for their accuracy (thereby enabling them to form more predictions) and less accurate players lose virtual currency (thereby discounting their ability to form more predictions).