World of Warcraft isn't a "downloadable" game. MapleStory since its free and "downloadable"
100% True.World of Warcraft actually is, you can download the full game. And set up a trial account, what you pay for is the member account, not the actual game.
I don't personally play that many downloaded games though, played MS once, since my friends forced me sort-of..and I was bored...but I play NFSMW most of the time, if I do play