I was just wondering, would it be possible to add mod support?
What do you mean by mod support?
If you mean letting users create modifications to your game yes it would be possible. Although some things would be clunky most are possible.
If you by mod support mean music tracker support there’s: https://www.defold.com/community/projects/147260/
FMOD can also play mod files. Since the Core APIs are now exposed, you should be able to use that as well.
Thanks for the responses.