Ninja Gaiden Sigma Plus added to North America's Vita launch lineup

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[url=//gaming/38-general/1779-ninja-gaiden-sigma-plus-added-to-north-americas-vita-launch-lineup][/url]BURLINGAME, Calif. January 6th, 2012 – TECMO KOEI AMERICA and Team NINJA announced today that NINJA GAIDEN SIGMA PLUS, a launch window title for the PlayStation®Vita handheld entertainment system, will be released on February 22nd 2012.