These games are offered FREE by Microsoft. Just follow these simple instructions:
Grab Kinect Fun Labs from the Xbox Marketplace, either through the console or a web interface. To download via web, login with your Xbox credentials and add the download to your downloads list, then turn on your console and sign in to Live (the download will begin).
If you’re already in front of your Xbox you’ll find Kinect Fun Labs accessible from both the Game Marketplace menu and Kinect Hub menu. The download is around 700MB, and depending on the speed of your connection this could take a while.
After it is downloaded, open Kinect Fun Labs and download the following games:
Battle Stuff
Air Band
Avatar Kinect
Mutation Station
Kinect Me (must download from console)
Build a Buddy (must download from console)
Bobble Heads (must download from console)
Googly Eyes (must download from console)
Musical Feet
I Am Super!
Junk-Fu
Kinect Rush: Snap Shot
5 Micro Lab Challenge
Mars Rover Landing
14 FREE Kinect Games for Xbox 360