If you took Brutal Legend and Rock of the Dead and mixed them together you would get something like Zombie Slayer Diox. In this game you play as Diox (the X is silent), a samurai guitarist from the year 20XX who slices and dices zombies to the beat.
Why is Diox hacking and slashing through zombie territory? To get a super guitar amp that is rumored to kill thousands of zombies with a strum of a power chord, of course!
Part rhythm action game, part zombie nightmare, Zombie Slayer Diox is slated for release as an eShop download early this year.