So if you were in the from dust topic you could see that you can get the game early following a link in that topic. Funny thing is that if you replace the url with different arcade titles you can do the same thing. So even though im not really interested in these games ill pass this along.
Insainely twisted shadow plant http://www.microsoftstore.com/store/msstore/html/pbPage.SummerOfArcade-Insanely-Twisted-Shadow-Planet
just found out the fruit ninja kinect one doesnt work but hopefully someone will enjoy this.