Ninja Gaiden Sigma

[Plasma_Snake]

Yeah, the above mentioned game was released on PS3. Can any1 tell me if it was a a different game or just the original Ninja Gaiden with a few changes?

[vamsi_krishna]

The difference between ninja gaiden & ninja gaiden sigma is

1) story line,
2) introduction of new female character(I don't remember her name),
3) As may gamers are complaining about its difficulty, the developers had included a ninja dog mode, which is comparatively easy then other modes.

These are the major changes form ninja gaiden and ninja gainden sigma. Although there are numerous small changes.