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.The gameplay for Sigma is very similar to the original version, albeit with some modifications made to the game. Like the original version, the player's movements and combat system are directed using the console gamepad, which comprises the left thumbstick, two attack buttons, and a block button. The game features a large selection of weapons for Ryu to wield, each with advantages and disadvantages that affect the way the player approaches combat. It also provides Ryu with magical spells in the form of ninpos,which allows him to inflict heavy damage on enemies while potentially avoiding damage himself. By shaking the Sixaxis controller, players are able to increase the power of their ninpos.