you mean like this?

These are great games. They're for windows, but work with WINE. Knytt Stories has a level editor, and level packs you can download.

Link

How the crap did you get FUPPES to work? I've been struggling with it for months. I finally got it to (kind of) stream music, but it ignores everything else.
I found their website and wiki to be almost completely useless (unless they made some major improvements over the summer).

was it because it was 'published' on the internet or something? Ethics? Just because they didn't want to?

At least in the US, I know that Processes and Compositions are patentable.

I suppose I should just ask them.

google around for SL-1. Of course, that was in the early days of nuclear power, when they were just designing things willy-nilly without thinking things through completely.