Chiptune
Chiptune is a style of electronic music made using the programmable sound generator (PSG) sound chips or synthesizers in vintage arcade machines, computers and video game consoles.
The term is commonly used to refer to tracker format music using extremely basic and small samples that an old computer or console could produce, as well as music that combines PSG sounds with modern musical styles.
It has been described as "an interpretation of many genres" since any existing song can be arranged in a chiptune style defined more by choice of instrument and timbre than specific style elements.
https://en.wikipedia.org/wiki/Chiptune