World of Warcraft can be downloaded for free (free trial allows you to play to level 20 and has an unlimited amount of time) or you can go to Wal-Mart or any other store that carries the expansions and buy them, or you can digitally buy the expansions as well but you cannot play the game completely for free, as it is 15 dollars a month.
Nope, you can only have one trial at a time. If you have the payed account for regular World of Warcraft then you can download The Burning Crusade trial. If you have The Burning Crusade then you can download the Wrath of the Lich King trial.
You get one free month of subscription when you buy the original game. You do not get any with the expansions though.
No.
You will still have to pay the 15$/mo. -- If you do not want to pay a store for the installation media, you can download the installer form the World of Warcraft site. But like the previous answer, you still have to pay the monthly fee. You also have to pay to start the service and for the expansions.
at worldofwarcraft.com you can have a 14 daily free trail
download it from http://www.greatgamesexperiment.com/download/27361
Runescape is somewhat like world of warcraft, though it is not a complex, it is free.
world of warcraft.com
Yes. However, you can download a free-to-try trial of World of Warcraft on their website. That demo allows you to try out World of Warcraft for 10 days, totally free. If you then want to proceed playing on that account, you can choose to pay a monthly fee.
Guild wars, you buy the game and that's it no extra payments other than expansions. tt
If you would like to download the official client, just go to the official website and download from the download section, its totally free.