Here's a neat behind-the-scenes glimpse at Glassbox, the engine powering EA's upcoming SimCity , the fifth game in developer Maxis's popular sim series.

Developer Dan Moskowitz gives us an official look (we saw the unofficial one a few weeks ago) at the map layers, agents, zones, and other insidey functionality that will make the game flow. Since SimCity will ship with a complete world builder that players can use to construct their own sandboxes, this is a great chance to start planning out your life-sized metropolitan re-creation of Stephen Totilo.

SimCity Insider's Look GlassBox Game Engine - Part 1 [YouTube]