MUGEN is a 2D fighting game engine created by Elecbyte in 1999. It allows users to create custom characters, stages, and screen packs. Over the decades, creators have bundled these custom elements into "mega-builds."
Why does this absurd project matter? In an era of polished, corporate fighting games with 40-character rosters and $30 season passes, 1UP MUGEN Super Plus represents the opposite: a sprawling, unwieldy, glorious mess made by fans, for fans. It’s a celebration of every sprite edit, every overpowered boss character, every half-finished OC that someone uploaded to a GeoCities page in 2004.
The "1UP" moniker has long been associated with high-quality community compilations that pack as many functional assets into a single package as possible. Over the years, these packs evolved from small 1,000-character rosters to the 15,000-character marvel achieved in 2022.