In dictionaries:
Ninja Gaiden Sigma 2
Ninja Gaiden Sigma 2, stylized as Ninja Gaiden Σ2, is a 2009 action-adventure game developed by Team Ninja and published by Tecmo Koei for the PlayStation 3.
Ninja Gaiden Shadow
Ninja Gaiden Shadow, released in Japan as and in Europe and Australia as Shadow Warriors, is a 1991 action game developed by Natsume Co., Ltd. and published by Tecmo for the Game Boy.
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