TheHDRoom: "It was inevitable. A year after bringing the Ninja Gaiden Sigma series to the PS Vita as a launch title, Tecmo KOEI and Team Ninja have now ported the second game, aptly called Ninja Gaiden Sigma 2 Plus, to Sony's powerful handheld. While the first game was a masterful reproduction in almost every way (read our Ninja Gaiden Sigma 2 Plus review), and included some "+" content that made the game seem fresh and exciting - even after eight years - Sigma 2 Plus's source game, 2008's Ninja Gaiden 2, hasn't been out of the public conscious long enough for nostalgia to set in. With that being said, can Sigma 2 Plus build on the greatness that was arguably one of the best launch games in the PS Vita's lineup? In a word: yes."