What is a MON file? A MON file is an audio module created by MONOTONE, a music tracker developed by MobyGamer. It contains note and effect patterns and sound samples used to play those notes and effects. Typically, MON files contain simple songs such as those you would hear in an 8-bit video game.

More Information Developer Jim Leonard, also known as MobyGamer and Trixter, created MONOTONE for use with vintage PCs and sound devices. Primarily, the program is meant to be run in MS-DOS. It allows users to create multi-track songs by specifying notes and effects in columns that represent each of a song's tracks. Users can then save the song they've created as a MON file. Because MONOTONE is available for only vintage PCs and operating systems, MON files are uncommon. However, developers interested in the vintage computing scene may encounter MON files.