Getsu Fūma Den (月風魔伝? lit. "Legend of Getsu Fūma") is an action RPG game for the Famicom by Konami, released in 1987. The lead character, Getsu Fuuma (whose name can be translated as "Lunar Wind Demon"), is based on the real life 16th century ninja Fuuma Kotaro. The box features artwork printed on a lenticular card which makes the image change depending upon the angle it's view from. This game was never released outside of Japan, although the legendary translation group RPGe has translated the game into English.
The player controls Getsu Fuuma, who travels through the overworld on pre-determined paths, which often branch off, leading to shops, character areas, and dungeons. Once in a dungeon, which is usually marked on the map with a torii (traditional Japanese gate), the player can navigate Fuuma through traditional platform action, jumping and attacking enemies with a sword or other weapons. There are also first-person dungeons later in the game. Throughout the game, the player can collect money and then use it to buy weapons and other accessories on the overworld.
- Getsu Fuuma Den was made to equal the 1986 Namco arcade game called Genpei Tōma Den. The "Underworld" concept, characters, and gameplay are very similar in both games.
- Although there hasn't been any remake or sequel done by Konami yet, Fuuma has appeared as a playable character in the Wai Wai World franchise (where other Konami characters made an appearance as well).
- In the Yu-Gi-Oh! Trading Card Game, Getsu Fuuma and his enemy, the Dragon Master, also appear as cards. The English versions of the cards are called "Getsu Fuhma" and "Ryu Kokki.