Decompilers are a funny issue here on BYOND; a lot of people get very upset or angry every time they get mentioned, so I may as well use this topic to list a few points;
A. When you use a decompiler on a BYOND game binary, what you get out is an atrocious mess.
Seriously. The code is unworkable without extensive reverse engineering. It isn't of use to anyone, so there's basically no point trying to extract code even if it does belong to you.
B. The people who have the ability to write decompilers have the ability and experience to write better software than yours ('you' being any given game developer) in the first place, so why would they 'steal' your game?
C. There are people with decompilers. No, they're not 'illegal,' they're a perfectly legitimate code analysis tools as part of a development and testing suite.
D. No, you can't have one; if you don't understand how the compiler works well enough to write one yourself, you're not going to get any use out of one.
I'm not fairly certain that code can be proven to belong to ANYONE. It's kinda like writing a book. I mean, we all use sentences and paragraphs and nouns and verbs. Is someone going to up and throw a fit, "I USED THAT EXACT SAME SENTENCE IN A BOOK I WROTE 12 YEARS AGO! I DEMAND PART OF THE PROFIT!"
Did you use src.loc = locate(1,1,1) in your game? I highly doubt you were the first to do that! Essentially, what I'm trying to say is that there's no way your code is yours. The game is yours, you put the pieces together in a particular way, but the code itself belongs to language inventor.
Considering your account age, I'd assume that you're either on an alt or a total nincompoop.
Well actually someone can but he would never release something that powerful.
Give up.