Ninja Gaiden Sigma is an action-adventure video game developed by Team Ninja and released for the PlayStation 3 in 2007. It is an enhanced remake of the original Ninja Gaiden from 2004, featuring improved graphics, new gameplay elements, and additional content. Players control Ryu Hayabusa, a skilled ninja, as he battles various enemies and bosses to avenge his clan and recover a stolen artifact. The game is known for its fast-paced combat and challenging difficulty. It introduces new characters, such as Rachel, and includes a variety of weapons and abilities for players to master. Ninja Gaiden Sigma received positive reviews for its gameplay mechanics and visual presentation.