Warcraft has several games under its title, including standalone games, expansions, board and card games, and also an MMORPG (Massive Multy Online Role Playing Game).
So which one are you referring to? :-)
Keep in mind that an MMO takes years to develop, even for a full staff, and it still has a lot of fall backs.
An RTS (Real Time Strategy) game such as Warcraft 1-3 also takes quite some time to develop, and it sure does make less money.
Also, for your consideration, there is a growing in software privacy, and no real effective way to stop it
I suggest you do your research thoroughly before starting such a project