NINJA GAIDEN Σ2 [NINJA GAIDEN: Master Collection]

Ninja Gaiden Sigma 2, stylized as Ninja Gaiden Σ2, is a 2009 action-adventure game developed by Team Ninja and published by Tecmo Koei for the PlayStation 3. It is a port of the 2008 Xbox 360 video game Ninja Gaiden II. It includes the entirety of the original story mode as well as various changes to the game's design, along with updated textures and a 720p resolution. The game changes Ninja Gaiden II in a similar, but not identical way to how Ninja Gaiden Sigma changed the original Ninja Gaiden. A port for the PlayStation Vita, titled Ninja Gaiden Sigma 2 Plus (Ninja Gaiden Σ2+), was released in 2013. Ninja Gaiden Sigma 2 was released for the Microsoft Windows, Nintendo Switch, PlayStation 4, and Xbox One as part of the Ninja Gaiden: Master Collection on June 10, 2021. An Unreal Engine 5 remaster that blends more aspects from the original game with Sigma 2, titled Ninja Gaiden 2 Black, was announced and released for PlayStation 5, Windows and Xbox Series X/S on January 23, 2025.