 He also reminisced about the game's high level of difficulty with its re-spawning enemies and enemy birds that knocked players into pits, saying this game "may have taught me how to curse".He further praised gameplay features such as clinging on walls and using ninpo techniques, and he noted the game's cinematic cutscenes, including the ominous opening sequence that featured two ninjas who launch into the air at each other clashing their swords in the moonlight.He said that ""Ninja Gaiden" was about as cool as an 8-bit game could be, especially for ninja-crazed kids of the '80s who, like me, had worn out their VHS copies of "Enter the Ninja"".