<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.

Mathematical tanebventions include D-modules, Chu spaces, the torus, Stephen Wolfram, Klein bottles, string diagrams, linear logic, the reals, Lambek's lemma, Curry's paradox, Stone spaces, algebraic geometry, locales, and histograms.