GameSpot writes: "Based on what we played, Ninja Gaiden Sigma 2 is shaping up to be just the sort of ninja action that fans of the series want. The core mechanics and content are a great foundation to build upon and the additions are looking good. We're not too disappointed about the loss of blood, which does appear to be pretty noticeable if you've played Ninja Gaiden 2. Overall, the additional content and level of polish give the game a lot of appeal. Hopefully, Team Ninja can buff the game to a nice sheen and continue in the direction it is headed in with our incomplete version. There's plenty to like here once it gets tightened up so look for more on Ninja Gaiden Sigma 2 in the coming weeks. The game is set to ship this September".