<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.

A metronome is an ancient and highly sophisticated instrument typically used in the player variety in conjunction with another, simpler instrument. hppavilion[1] is learning to play one. Taneb invented parts of it at regular intervals.