There are two trigger phrases guaranteed to get us slavering like Pavlovian dogs, here at Xboxer - "Ninja Action RPG" and "Xbox Exclusive". Ninja Gaiden II obviously covered both of those bases earlier in the year (hence the sizable pool of saliva beneath my desk - must clear that up before it damages the floorboards) but it won't be long before that disc becomes transparent from over playing, and THEN what? ...