Not a Twine game, but something I thought you might be interested in…
Writing Seedship got me interested in procedurally generated text, and the other day I stumbled on Tracery, which is a simple procedural text generation tool. It powers Cheap Bots Done Quick, which lets you create your own Twitter bots using the Tracery system.
I spent a few hours playing around with it, and eventually came up with @spaceoverlord, which tweets random plots to destroy the world! (I was surprised that the @spaceoverlord handle was free.)
Tracery also interfaces with Twine, so I might try to use it in a future Twine game (not the orc monk game, which is more linear, but a future procedurally generated one).