I said minimal, not zero. To use your Arkham combat example, you do need to build the character animations, but you don&#x27;t need to build the Arkham city environment in which those combat animations will eventually take place.<p>To give a visual example, in Street Fighter 5 there&#x27;s the training stage, which is very simple but ideal for testing character animations and game mechanics. If you were developing Street Fighter 5, wouldn&#x27;t you build such an environment first?<p><a href="http:&#x2F;&#x2F;media.eventhubs.com&#x2F;images&#x2F;2015&#x2F;07&#x2F;07_betapics02.jpg" rel="nofollow">http:&#x2F;&#x2F;media.eventhubs.com&#x2F;images&#x2F;2015&#x2F;07&#x2F;07_betapics02.jpg</a>