Here is an overview of the game from WayForward:
River City Girls Zero, meanwhile, lets players experience the first time that Misako and Kyoko teamed up with Kunio and Riki to take to the streets in hard-hitting, curb-stomping action. While the graphics, music, and gameplay all remain faithful to the classic 16-bit Super Famicom release, this version marks the first time the 1994 game will be localized for the West. A new opening cinematic, new manga cutscenes, and a new theme song by River City Girls composer Megan McDuffee have been added as well. Set out solo or team up with a friend in local co-op and discover how the River City Girls story began!