If you get the forbidden message, just copy the links into your address bar.
FFXIII: http://www.famitsu.com/game/coming/1219286_1407.html
Versus XIII: http://www.famitsu.com/game/coming/1219287_1407.html
Agito XIII: http://www.famitsu.com/game/coming/1219288_1407.html
versus 13
ff13
Agito