Sure you may not be able to decmopile an entire program, but I have seen ways people were able to get strings and stuff that contains information.

that's not that hard, just get a program like cheat engine and then bam, you've got all the variables you need if you can find them in memory -- although I do not believe this applies for strings. It can mess with practically every single bgt game out there, except for adventure at c: to my slight annoyance.
It must encrypt the values in strings and then decrypt and mess with them to do stuff, but otherwise leave them in a scrambled state.
Also can someone tell me what algorythm bgt uses for encrypting strings -- is it AES, and if so, what bits, or is it something else entirely?

yeah I didn't think I was, I just wanted to know it was up to modern standard

what method of encryption does it use for packing files?

About a year ago, I reverse engineered the pack_file algorithm and wrote up an explanation as well as fully-functional python version. You can find that here.

If OP (or anyone else) is dead set on getting *their* code back, I may be able to help in extracting information and/or re-creating the project. Contact me privately and we can discuss rates.
Note, if you send me something to which you have no rights with the expectation of source code, don't expect anything other than a loss in respect.

Can we also put an end to the baseless presumptions? You know who you are. They do little to further the conversation and in fact cast more doubt on OP, where there is already enough given the subject matter.
Nefilimul is a new member here. Nowhere in their post history do I detect anything near the magnitude some of you are proposing. There is a stark difference between what some are saying and

"No decompilers are available at this time. Just a heads up, but using one with malicious intent... Kinda dickish"

Innocent before proven guilty and all that. The shear act of requesting tools or information in and of itself is far from disreputable.

@36, Can this also decrypt sounds?

I don't normally approve of something like this, needless to speak about sharing it, but seeing that bgt is long dead and people are hiting a dead horse insisting for too long now, so, instead of replacing a failed project with another one, I found something that can be tweaked to replace a bgt decompiler.
It's not as if it would be illegal, mind you, abit gray is the use I intent to put it to.
It's intended to optimyse angelscript by converting it in c++. It's a python script that generates c++ code that compiles angelscript bytecode down to c++ based on the source tree of the angelscript lib, so we'll need to obtain the exact source dist of the version bgt uses in order for this to work properly.
After we obtained and compiled our generated compiler, we should create a tool to extract, decrypt and dump the bytecode from the provided bgt executable, then another who integrates our freshly generated code slightly modified to output bgt compliant syntax, thus we'd create for our selfes a bgt decompiler toolchain to decompile any bgt exe and, eventually give people the option to convert it into cpp, etc.
I'm going to say one more thing before I end this abnocciously long post, for the sake of everything that's good in the world, for the sake of liberating the bgt enslaved people, let's do this, now or never!
The link is:
https://github.com/quarnster/asaot
I really hope this will work properly and we'll finally have our own bgt decompiler, if nothing else, then let it be a warning to any bgt starters, never to drink the sweet poison for fear of code decompilation and cloning even if compiled with release mode enabled.

Then, the first step is to reverse engineer the exec.bin file because, since it needs to decrypt the bytecode at some point before passing it to the load_bytecode from the as lib, the key is for sure somewhere in the file and our jov is to find an absolute position from the beginning of the file, not from memory and use it to dump that bytecode. Then, the tool I linked above can take care of the rest, no matter whether the bytecode is in binary since that it was made to do, transforming angelscript bytecode.
Btw, I am not a cloner, neither do I want to stoop that low, not in this lifetime at least. The only thing I want to achieve with this comunity driven project is to stop newbies thinking that, since there is no bgt decompiler, their newly released game is immune to reverse engineering and such an unconchurable bastion. I would say to those people, no, no, no... there truely is a bgt decompiler, catch!

I doubt that it's too tough. I know that there are pretty bright people on here. However, if you know how to disassemble an EXE, chances are you will keep pretty quiet about it because of the following:
1. Such tool is incredibly dangerous in wrong hands.
2. You are uninterested in the content and are only doing for the sake of the experience.
Either of those reasons could serve as an explanation here.