If you go to the assignments page, the ones that start with "ML:" are the mystery language assignments. They're online and you can play with them right there!

If you go to the assignments page, the ones that start with "ML:" are the mystery language assignments. They're online and you can play with them right there! For the 2017 course [1] we re-implemented the mystery languages in Racket, so you'll need to install DrRacket to use them. But they're a bit improved and more robust. [1] http://cs.brown.edu/courses/cs173/2017/ http://cs.brown.edu/courses/cs173/2017/