I've been making music and SFX for game jams with some different groups for a few years now. My portfolio is all here: https://coeur-de-liqueur.itch.io/. Below are three of my chiptune tracks, each made for a different game jam. I prefer writing melodic stuff but can work outside my comfort zone.
https://on.soundcloud.com/1ncgWZGWlvuF0wbBhi
https://on.soundcloud.com/pWtxeGYNmGn5vYJ1B2
https://on.soundcloud.com/YI3wmgeOcuyZbEYqao
Let me know if you want me on your team! I normally compose in Logic and then deliver wavs or oggs.