<b_jonas> slashlearn euclid//Euclid is a short geeky game in which the goal is to do Euclidean compass and straightedge constructions in as few steps as possible. It runs in the browser, found at "http://www.euclidthegame.com/". It was popular among #esoteric regulars in 2016-07.

Dragons are fractal creatures of magic, capable of shrinking or expanding to any size. Taneb invented them to live inside his string diagrams, but they prefer to hover around pinheads and feed on angels.