We've only actually seen this game on the Commodore as Superior are developing a habit of advertising games long before they are released. Looking at their screenshots it does seem to be very well converted and should be available from us by the time you read this preview.
The basic plot of the game is that the evil Shogun has nicked all the scrolls of the Ninja brotherhood and murdered them all except for one. You. The Last Ninja.
It is your duty to recover these scrolls by making your way through the various scenarios, finding weapons and taking care of the various bad guys.
All good violent stuff and it certainly scored a big hit on the Commodore. I cetainly enjoyed the Commodore version (which multi-loaded as you progressed) and the range of baddies, weapons and fighting techniques certainly is more varied than games like Barbarian, The Big K.O., etc.
Can't wait to see it.