"Ninja Gaiden Sigma, also known as Ninja Gaiden Σ, is an action-adventure game developed by Team Ninja for the PlayStation 3 video game console. It is a remake of Ninja Gaiden, which was originally released on the Xbox... Ninja Gaiden Sigma features a number of modifications and new features. Amongst the new features are a new playable character, Rachel, the demon hunter as well as SIXAXIS support. Contrary to claims of this being the "more complete" version, it also lacks some features, such as the ability to view cut scenes outside of the story mode and the ability to unlock the original Ninja Gaiden." Source: Wikipedia, "Ninja_Gaiden_Sigma," available under the CC-BY-SA License.