How do I decompile .FGZ2

[Sinbiosin]

You can have your own testing client? wtf

I suppose that's an option, just a lot more work I would assume. Still, it's unfortunate I can't play with the models I make even if I'm the only one that can see them

[GeorgeGFX]

I suppose that's an option, just a lot more work I would assume. Still, it's unfortunate I can't play with the models I make even if I'm the only one that can see them

Wrong, it would require far more work to decompile FG's files instead of creating your own custom server which takes no more than 15 minutes to setup everything.
Also, nobody will give you our files decompiled.