The PC Engine Super CD-ROM version of Downtown Nekketsu Monogatari (known as River City Ransom in North America, Street Gangs in Europe), released on December 24, 1993, was published by Naxat Soft and developed by KID, the same team that did the PC Engine versions of Nekketsu Kōkō Dodgeball (Super Dodge Ball), Double Dragon II: The Revenge, and Downtown Nekketsu Koushinkyoku.

This version features enhanced graphics, an arranged redbook soundtrack and fully voiced characters, with the voices of Kunio and Riki performed by Ryou Horikawa and Nobutoshi Canna respectively. The player's progress is saved in this version on the PC Engine's backup memory. The rest of the game is almost identical to the Famicom version.