This is the companion reference for A Brief Introduction to Esoteric Languages, my lecture for a friend’s college class. The video should be legible to other viewers, and the material here should be (mostly) understandable without watching the video. The Esolangs Listed roughly in order of appearance in the talk, with the exception of Piet, which was moved to fit in with the other multicoded esolangs. INTERCAL Don Woods, 1972.