Mario Bros. is an arcade game developed and published by Nintendo. It's a precursor to the Super Mario Bros. franchise. Although this is not specified anywhere, the soundtrack featured in this playlist is from the Famicom/NES port of the game, rather than the original arcade one. This quirk originates from GilvaSunner's channel, where it was likely the case due to the NES version being the only one with an officially released soundtrack.
Another quirk copied from GilvaSunner's playlist is the use of the "Game Music - Song" format. However, the use of compilation tracks on GilvaSunner (i.e. "Mario Bros. Music - Game Start A ~ Miss ~ Clear" was a single video containing 3 tracks, likely also inspired by official releases) wasn't carried over to SiIvaGunner.
