Theseus
https://www.youtube.com/watch?v=qnwXX510E2Q
Tom Lieber, Joel R. Brandt, and Rob C. Miller. 2014. Addressing misconceptions about code with always-on programming visualizations. In Proceedings of the SIGCHI Conference on Human Factors in Computing Systems (CHI '14). ACM, New York, NY, USA, 2481-2490. DOI=http://dx.doi.org/10.1145/2556288.2557409