Final answer:
Microsoft introduced Kinect in 2010 to revolutionize motion-controlled gaming.
Step-by-step explanation:
The reason that Microsoft introduced Kinect, a new type of game system, in 2010 was to revolutionize motion-controlled gaming. In 2006, Nintendo launched the Wii and changed the way we played video games by introducing motion control with handheld devices. Microsoft wanted to offer a similar interactive experience but without requiring any physical controllers. With Kinect, players could use their bodies to control the game instead of traditional gaming controllers, which was a major innovation in the gaming industry.