Upon completion, Shinobido 2: Revenge of Zen throws up an interesting question -- does the fun one has with a game justify the fact that it's a glorified port masquerading as a sequel? What if the original game is seven years old?
While it features a fresh story with a new protagonist, there is so much in Shinobido 2 that has been recycled from Way of the Ninja that it struggles to feel like a true follow-up. Sequels reuse material from their predecessors all the time, but not when there have been so many technological advances since the last game that to do so would age it dramatically.
That's what Shinobido 2 is. Aged. It is, to its core, an old PlayStation 2 game pretending to be a new PlayStation Vita product. Even so, there's still a lot of entertainment value to be had, and thus the conflict arises. How can you recommend a seven-year-old game that's trying to pass itself off as something else?