<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.

#!/usr/bin/env lua

math.randomseed(os.time())
W={}
for i,a in ipairs(arg) do
   for w in a:gmatch("[^%s]+") do
      table.insert(W, w)
   end
end
if #W>0 then
   print(W[math.random(#W)])
end