「ダウンタウン熱血時代劇」 (Downtown Nekketsu Jidaigeki) is a Nintendo 3DS game developed and published by Arc System Works in Japan. It is a side-scrolling action game set in the Edo period of Japan. The game follows the adventures of a young samurai, Ryoma Sakamoto, as he battles against the forces of the Shogunate. Players will take control of Ryoma as he uses his sword and various special moves to defeat enemies. The game also features a range of characters from the Downtown Nekketsu series, including Kunio, Riki, and other familiar faces. The game also includes a story mode, where players can learn more about the characters and their backgrounds. Downtown Nekketsu Jidaigeki is an exciting and challenging game that will keep players engaged for hours. With its unique setting and characters, it is sure to be a hit with fans of the series and newcomers alike.