@a1ba >scripts are basically go from one scene to another according to very few flags
>It's not really a program.
If it's a script in a turing complete language, it's a program.

If it's not a script and is rather a non-turing complete scene playlist, with flags, with set possibilities, that is not a program (this is all what basic VN's need, but of course not).


The game artwork and story being proprietary aren't a real problem as long as they are encoded in a free format, as you can't practically stop people from sharing and modifying those, unlike how distributing only the object code of software makes non-trivial modifications extremely difficult or impossible.