There's nothing entirely terrible about Undead Knights, except for maybe the soldiers that infinitely spawn out of nowhere. It's just disappointing that the action remains so simple and unremarkable when many similar games exist for the PSP. This is especially true when you consider that creating a zombie army--its one leg up on such games as Dynasty Warriors and Warriors Orochi--doesn't let you do anything much more exciting than demolish an iron gate. 5.5/10