Ninja Gaiden: Sigma 2

In Ninja Gaiden 2 sigma, gamers must guide Ryu Hayabusa on a mission to avenge his clan and prevent the destruction of the human race. Armed with an assortment of ninja weaponry, players must help Ryu skillfully maneuver through a world fraught with peril and danger. Ninja Gaiden 2 will feature an all-new gameplay engine, a new auto-health regeneration system, levels, adventures, enemies and thrilling combat with an extensive assortment of ninja weaponry, representing a true evolution of the highly popular franchise.

• New Playable Characters: Ninja Gaiden's Rachel, Ayane from the Dead Or Alive series and Momiji from Ninja Gaiden: Dragon Sword appear as sexy new playable characters.
• Online Co-Op: Two people can engage in online co-op play, with voice chat, in 30 or more different stages (in 4 different difficult settings) to complete special missions. Rankings from each mission are recorded and posted online, where gamers can choose their opponents based on players' mission stats.
• Visual Diversity: Over 30 unique characters, 17 stages with a variety of environments and a story which unfolds in 70 impressive cut-scenes.
• New Enemies: A variety of new enemies and bosses have been incorporated into the stunning enhanced environments.
• Variable AI: Contributing to the increased difficulty level, the gameplay differs each time you appear in a level as enemies engage in a variety of different actions as they assess the current situation.
• Gameplay Innovation: A finishing blow can be used in battle to quickly defeat an enemy in one dynamic action.
• Weapon Rewards: The weapons you acquire can be leveled up to strengthen their power and gain new battle techniques.
• Enhanced Graphics and Sound: Full HD 1080p output and 5.1 surround sound allows players to experience the game in total high-definition.