<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.

04You have discovered an eerie cavern. The air above the dark stone floor is alive with vortices of purple light and dark, boiling clouds. Seemingly bottomless pits mark the surface.