Ninja Gaiden - arcade - happened in 1988.
Ninja Gaiden - arcade - was created in 1988-10.
After you beat Ninja Gaiden Black you can play it in the main menu.
not sure when you asked this question, but until now there are: -old arcade ninja gaiden games-not sure how they are called, -ninja gaiden (xbox) -ninja gaiden black(improved ninja gaiden for xbox) -ninja gaiden sigma Σ (more improved version for PS3) -ninja gaiden 2 (for xbox 360) and in the next months there will be a release of: -ninja gaiden 2 sigma Σ (another version for ninja gaiden 2, for PS3)!!
Ninja Gaiden Sigma happened in 2007.
Ninja Gaiden II happened in 2008.
Ninja Gaiden Shadow happened in 1991.
Ninja Gaiden Dragon Sword happened in 2008.
No, Sonia from the "Ninja Gaiden" series is not the same character as Irene Lew. Sonia is a character from the original 1988 "Ninja Gaiden" arcade game, while Irene Lew is featured in the later "Ninja Gaiden" titles, specifically in the 2004 reboot. Both characters have different roles and storylines within the franchise.
Ninja Gaiden - Game Gear video game - happened in 1991.
ninja gaiden black is more upgraded and with new enemies
for all the ninja gaiden games, there are NO cheats!!... I've done some cheats in the first Ninja Gaiden.
Ninja Gaiden Sigma was created in 2007.