Is it a "fat" binary?
AFAIK a fat binary is just a binary with all dependencies included. It would still be compiled for a specific platform. The magic part about this is that it's a single file compiled once that can be run on most platforms. And it also adheres to the format of a zip file, so you can add, modify and remove assets as you please inside the actual file, post compilation.
The idea also reminds me of (executable) self-extracting ZIP archives that were common once upon a time.