As part of our ongoing coverage of all things Guild Wars 2 on launch day, we have a pair of news bits of interest to some of our readers. The first is that the game is powered by Havok AI and Havok Physics. The second is that the official Brady Signature Series and Limited Edition game guides are out and published for today's launch.

ArenaNet was able to utilize Havok AI to generate a diverse set of navigable spaces in a large, dynamic, open world. The engine scaled well to support the magnitude of their worlds while keeping the memory footprint low through streaming and instancing.  Havok Physics was leveraged for basic character movement as well as more dynamic and complex behaviors like those seen during action-oriented combat.

Find out more at either link above.