Sports-themed minigame collections are practically a requisite for motion-controller launch lineups at this point. The Wii launched with Wii Sports , The PlayStation Move launched with Sports Champions, and now Kinect for the Xbox 360 is launching with Kinect Sports.
Good variety of sporting events; Intuitive and mostly responsive controls; Multiplayer works well both locally and online
Does almost nothing to cater to solo players; You need to exaggerate some of your movements for them to register