So Microsoft have been adding games that were only able to buy from xbox.com to microsoft.com, some of these are also free with Xbox Live Gold in Australia but reddit found these on Microsoft Japan free without Xbox Live Gold needed.
JUJU
Stacking Expired It's back, thanks YoursTruly
Destroy All Humans!
Also
Ikaruga via Argentina, thanks moo
Sensible world of soccer via Korea, thanks dealbot
Does the original destroy all humans count for the Microsoft rewards quest?