title: Example of modular game engine?
body: <p>I found this a very interesting read: <a href="http://www.devmaster.net/articles/oo-game-design/" rel="nofollow noreferrer">http://www.devmaster.net/articles/oo-game-design/</a></p>
  
  <p>The author repeatedly says "Wow, this could be great, if implemented carefully. This is the future!". Well, not very useful. I need code, and most of all, I need a proof that this kind of design actually works.</p>
  
  <p>Do you know of an example which implements some of the concepts mentioned in this article? Maybe a small open source game one could study? Or, at least, a place where similar concepts are discussed?</p>