This is the very first Ruby code I wrote, back in 2008-2009. It is a clone of Tetris with an original soundtrack :) The code might suck, but the game is fun!
As of September 2013, I corrected its syntax so that it runs on Ruby 1.9/2.0 and people can play it. And it works with the latest Gosu, no changes at all!
git clone git://github.com/txus/txustris gem install gosu ruby init.rb
Have fun! <3