River City Melee Mach!! (ダウンタウン乱闘行進曲マッハ！！, Downtown Rantou Koushinkyoku Mach!!, which roughly translates to "Downtown Brawl March Mach!!") is a tournament-style fighting game developed and published by Arc System Works for the PlayStation 4, Nintendo Switch and PC, released on October 10, 2019. The game is an enhanced version of River City Melee: Battle Royal Special.