They test very specific parts with a huge number of (fanatic) people. - Edit 2
Before modification by Ghavrel at 09/11/2011 10:26:56 AM
There have been several stages of the beta. Mostly, they get a bunch of crazy fanboys to run around at level 30-35 and whine about balance issues, and then they fix it.
( I really hope I'm one of them D: )
( I really hope I'm one of them D: )