Ninja Gaiden 3: Razor's Edge is an update of Ninja Gaiden 3 . It includes all the downloadable content made available on other platforms as well as some new changes. A new playable character, Ayane from the Dead or Alive series, is added with her own story mode chapters. An online co-operative mode has been included where both Ryu and Ayane are playable. The controls make use of the Xbox 360 Game Pad for tasks such as executing Ninpo, as well as displaying the combo chart. The Karma functionality from previous games in the series is reintroduced in this version, allowing players to upgrade weapons, Ninpo, character health and move set. There have been other changes to aspects such as AI, as well as additional weapon and attack types, enemies and battle arenas.
The gameplay of Ninja Gaiden 3: Razor's Edge is fast-paced and action-packed, requiring players to use stealth, agility, and combat skills to progress through the game. The addition of co-operative mode adds a new layer of complexity, as players must work together to overcome challenging enemies and bosses. The Karma system allows for more depth in character customization, while the new controls and gameplay mechanics make the game feel fresh and exciting.