Sukeban Deka II: Shoujo Tekkamen Densetsu

Sukeban Deka II: Shoujo Tekkamen Densetsu (スケバン刑事II 少女鉄仮面伝説) is an game  developed and published by Sega for the Sega Mark III. It is a game based on the Sukeban Deka manga about a delinquent schoolgirl who is taken in by the government and forced to fight crime to redeem herself. She is given the codename "Saki Asamiya" and a metal yo-yo that doubled as a badge and made to infiltrate high schools around Japan to investigate and stop criminal activities. This game is based upon the second televised series of the manga, about a mysterious girl with an iron mask named Yoko Godai who takes on the identity of Saki Asamiya after being freed from her mask. She gets the help of two other sukeban: Kyoko "Okyo" Nakamura, and Yukino Yajima.

The game combines a lot of genres and displays different interfaces. When you exploring the high schools, the game presents itself as a graphical text adventure similar to Hoshi O Sagashite. When you're battling enemies and bosses, the interface changes to a beat 'em up similar to Bare Knuckle. And when you're in the mazes, you view everything in a first person point of view similar to the 3D dungeons in Phantasy Star. While the game was never released in any other language than Japanese, an unofficial fan translation patch has been made available, and can be found here. Among the fan translation community, this game also has the distinction of being the very last Japanese Master System game to need an English translation.