Decker and Twine are very different animals, but they do have significant overlap: both tools make it possible to build interactive fiction in a largely drag-and-drop fashion, with little or no programming required.

I recently wrote an extremely rudimentary interpreter for Twine's .twee format (I only support passages and one syntax for hyperlinks) just to see how difficult it would be:

You can try it out and rifle through the source code here: http://beyondloom.com/decker/goofs/minitwine.html

Would anyone be interested in a more elaborate elaborate writeup explaining how this works? Maybe with a slightly expanded featureset it could make a nice contraption.

That's very impressive! Certainly shows how capable Decker is. It could be used for minigames in a larger deck I suppose, not unlike the visual novel extension.

very very cool!