“pseudo 16 bit” just means it looks 16 bit but actually isn’t.
To find stuff in GitHub go to “view code” and navigate through the file folders. Things are in pretty normal spots, zombies go in the monster folder. I don’t remember if I’ve uploaded my zombies yet, I could do that in a moment.
If you don’t know how to use GitHub, you could just post them here and I’ll check them out.