"Ninja Gaiden 2" makes its long-awaited debut on Xbox 360 as the blockbuster action-packed sequel to "Ninja Gaiden." "Ninja Gaiden 2" features a new and improved game engine, developed from the ground up exclusively for Microsoft and Xbox 360 by Team Ninja and legendary game developer Tomonobu Itagaki, creator of the famed "Dead or Alive" franchise.