A basic Death Stranding 2D demake targeting SNES, GBA, PS1, Windows, DOS and whatever I can make it work on in one binary. So the single file is a valid Windows program, a GBA ROM, a PS1 disc image, a bootable PC disk image, etc.

I'm really chipping away at it one bit at a time. I already have the most crucial bit, which is the very start of the file which needs to be a DOS EXE header, x86 machine code and ARM machine code at the same time. But at every step new practical difficulties arise.

The specific bit I'm working on now is writing a custom linker, because no regular linker script magic is going to make a normal linker do what I need, and it turns out slicing intermediate binaries isn't going to cut it either.