<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.

SGDQ is Summer Games Done Quick, an annual video games speedrunning event for charity every summer, see http://gamesdonequick.com and https://gamesdonequick.com/tracker/events/