Bussan Mahjong III: Mahjong G-Men is a mahjong game compilation released by Japanese company Nichibutsu on July 20, 1990, for the Nintendo Entertainment System (NES). It includes adapted versions of two classic arcade games—the puzzle-investigation themed *Mahjong G-Men '89* and the falling-tile mahjong puzzler *Oh! Paipii*—with all adult content from the original arcade versions removed.
The game offers multiple modes for players to choose from:
- **Mahjong Dojo**: A quick battle mode where players can face off against any of the eight computer opponents from the story mode.
- **Puzzle Game: Oh! Paipii**: A falling-tile mahjong puzzle game. Players use the directional pad to move falling mahjong tiles and the A button to rotate their suits. Clear lines by forming complete winning hands and earn points based on riichi mahjong scoring rules.
- **Mahjong G-Men**: The story mode, featuring two cases: "The Murdered Female Employee" and "The Missing Golden Tile." Players solve these mysteries by winning mahjong matches.
This game supports single-player only and is in Japanese. By blending traditional mahjong gameplay with puzzle elements, Bussan Mahjong III: Mahjong G-Men delivers a rich and varied gaming experience.