Note:- This game is also known as - Ninja Ryuukenden
Sound Test - When the screen says Techmo Presents 1989:
Code Effect -
Hold A, B, Left, Down, Select, and press Start Sound Test
Extra lives - In Area 5-3, there's a 1UP on the 3rd floor of the tower. Then, go back down the ladder to the 2nd floor, and then back up to the 3rd floor. The 1UP will have returned. You can do this as many times as you want.
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