Surprise release! I dug up some source code to games that haven't had their code released yet: Eddie Galaxy, Spooky Castle, and Stockboy
(I also tried to get Amazin' SPISPOPD but I can't find the code!).
You can visit this folder
to grab them. Of course, as this was inspired by SpaceManiac himself, you should visit SpaceManiac's HamSandwich Github
where he has set up a repository for his HamSandwich tool which is already updated to work with these new releases.
And don't forget to stop in the Discord chat
where you can chat with other people who are messing around with this code.