It's also no secret that Ninja Gaiden: Dragon Sword is going to be one of the year's most highly-anticipated games on the console. In fact, Itagaki commented that he's been approached with many offers to use his game engine. This could mean more DS games utilizing his innovative stylus-driven control scheme down the line.
And, if you needed another reason to pick the game up, listen to Itagaki. He says if you "consider yourself a true gamer, you owe it to yourself to play this game. If you don't, you'll be missing one of the breakthrough experiences in video gaming. This is an incredibly innovative piece of software."
We're sold. If you're not, maybe you should download the demo?