First of all you gotta check out this chilling remix with a sample of “Getufu” from Shinobi III: Return of the Ninja Master. After you sampled the sweet sounds hit up the SEGA Blogs for a solid read on the Saturn and PS2 iterations of Shinobi.
In terms of the 3DS entry into the series, I was tempted to purchase a copy of Nintendo Power today for a the pull out poster advertising Shinobi. It shows you how to craft paper ninja stars and dress up like a ninja. I now know what I will be for Halloween next year!