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# Superior graphics on PS3 Sigma version with enhanced colors and gameplay speed.
# Three brand new Chapters added to PS3 Sigma, totaling 18 Chapters.
# Rachel is playable character now including updated story line.
# 25 new Missions in Mission Mode for both Ryu and Rachel.
# New enemies & 3 new Boss characters, totaling 70, with retuned & enhanced AI.
# New weapons including dual-wield katanas, double swords, Ninja magic, and others.
# New combos and special action moves such as running & fighting on surface of water.
# New destructible environments and items.
# New innovative six-axis controller functionality to assist in fighting enemies.
# Upload Karma scores on Playstation Network to compare leader boards.
# Additional content made available later in 2007 to further enhance the Ninja Gaiden Sigma PS3 experience.
# 5 difficulty levels, including access to easier “Ninja Dog” level at any Chapter during game allows for playability for all skill levels of gamers.
