Starcraft is and will always be the defining Strategy game.  Its easy access interface and the quick pick up on controls alows this game to be great.  The best part about this game is its multiplayer capabilities.  Blizzard has given Starcraft players the ability to make their own games.  Everything from tag to chase to movie contests are held on their FREE servers.  I don't like to give 5 stars that easily but this game is the definition of fun.