We've come a long way! Today, the quality of video game music is on par with anything you can make in a studio. But back in the early days of video games, the music relied on various chips and sound cards that had their own characteristic sounds and limitations. The capability of the sound chips dictated how the music was made. This video below is a great run through of how that all worked!
Old School and Video Game Music for Ableton Live!
I've always loved the sound of vintage synths and old video game chips. Just hearing those bleeps and bloops takes me back to my childhood. Below I've got a couple of Ableton Live Packs that are based on those old school sounds that I remember so fondly.