Paper mario Origami king: what are the .bfres.zst ?

[Prif X]

Like you I don't really know BUT ... I think it's another file format specific to some games that works like szs, a bit like ".zs" files in acnh (animal crossing: new horizons ), it's a bit like comparing a rar file to a zip file. I never tested to open these models but I saw on a discord server that someone managed to open them on switch toolbox, as I don't know if we can put links to github here I will not give you no link but you can easily find it on google.