And here's another one. It introduces maze building ideas in a simple way. http://www.jamisbuck.org/presentations/rubyconf2011/index.html http://www.jamisbuck.

And here's another one. It introduces maze building ideas in a simple way. http://www.jamisbuck.org/presentations/rubyconf2011/index.html http://www.jamisbuck.org/presentations/rubyconf2011/index.ht...