For people who were not there the last meetup and want a little recap ;)
Develop a game in Ruby, whose commands are text only (or highly related to text mode games that are back in the game today, but were very very present in the 1980s) . An example : the excellent RubyWarrior , or the famous game (lisp) Dunnet (emacs : M-x dunnet) ... or the sublime candybox .