A new Shinobi game is in the works, according to the LinkedIn profile of Griptonite Games’ Branden Brushett. Brushett, an Environment Artist at the studio, lists the project for the 3DS. Apparently the new Shinobi title has been in the works since November 2010 and the company is still developing it.
Griptonite Games has a great deal of experience when it comes to creating games for Nintendo’s portables. They started by making titles for the Game Boy Color, later moving on the to Game Boy Advance and eventually the DS. We know that Griptonite has a second 3DS title in the pipeline, Green Lantern, which is due for release next month.