Balloon Fight (USA) NES Disassembly Requires ARM9's bass fork to assemble here: https://github.com/ARM9/bass Build iNES ROM Include CHR ROM file of Balloon Fight as "BalloonFight.chr" Assemble "BalloonFight_iNES.asm" with bass. Build PRG ROM Assemble "BalloonFight_PRG.asm" with bass.