Neverwinter? All you need is a Perfect World forum account and a little luck. The devs are doing an alpha key giveaway that requires you to comment on the game's forums and answer a simple question: Which class are you looking forward to playing the most in Neverwinter?
Once you've added your answer to the giveaway thread, you'll just need to sit back and wait until tomorrow when the winners will be contacted via a private message on the boards.
[Thanks to Paul for the tip!]