A "chiptune soundtrack" refers to music that is composed using sounds generated by old video game systems or computer chips. It has a nostalgic and retro feel, often associated with the pixelated graphics of classic video games. Full definition
You'll bounce through a series of levels fighting enemies and the beat to the amazing Danny Baranowsky soundtrack, or you choose from five additional remixed soundtracks, including a new remixed chiptune soundtrack by Chipzel! (idatxbox.com)
In addition to the colourful and silly world, you're treated to a catchy chiptune soundtrack as you play that features renditions of classic tunes and plenty of new tracks that'll get your toes tapping. (videochums.com)
We saw the indie scene explode with Nidhogg 2, which evolved on the original with a new art - style, new weapons, and one of the best chiptune soundtracks of the year. (gamecrate.com)