Some of them really bad actually
Wilson also expressed disappointment in sales of Kinect games. Despite the hype Microsoft's motion-sensing camera system generated, Wilson said software for the unit totaled sales of $57 million, or about 4 percent of game sales for the month. Wilson didn't weigh in on the peripheral's most highly promoted titles, but he did say that Electronic Arts' third-person shooter Harry Potter and the Deathly Hallows, Part 1 (the 360 version of which supports Kinect) was another disappointment, as the blockbuster movie tie-in sold fewer than 100,000 copies.
http://www.gamespot.com/news/6285170.html
Remember when people said that the Wii sold consoles but not games??