Favorite game from :

[retrolinkx]

Hmm, hard to say. Halo would probably be it if exclusivity isn't included, but if it is then Metal Wolf Chaos The game that revolved around a fictitious President of the United States named Michael Wilson. Using a suit of powered armor named Metal Wolf, he battles forces who have taken over his country in a coup d'état, including his nemesis, Vice President Richard Hawk which was sadly only released in Japan, but if games I haven't played doesn't count. Then....uh....

Jet Set Radio Future.