The Team Ninja is working on a new title devoted to the famous series of Ninja Gaiden . Keiji Inafune has announced the existence of a new title even if it is not specified if the development is started or if the project is in pre-production. For the moment we will have to "settle" the new Ninja Gaiden Z coming on February 28 on Xbox 360 and PS3, and we told you in our brand new Preview .