To play these games, you must first install Vitalize, available for Windows only. These games feature global high scores, but no one is moderating the names entered on the high score list, so the ESRB thing of "Online Interactions Not Rated" applies.
Windy Walk137 kb
Light Arena 1198 kb
(Light Arena 2 was cancelled, by the way. I had an idea for it, but eventually realized it wasn't a very fun idea.)