if u have played warcraft 3, then u must have been played dota allstar map. Dota or "defense of the ancients" map have been used in several tournament and recently Russia have wins the prime nations cup. For more information, visit MYM Prime Nations.

Well, if u haven't played dota, here some information:

1. Select your hero.
2. Fight with bot or your friends

simple as that...but remember each hero has it own unique abilities. So, choose hero that suit for you. You can get official map here