One of the better games I've played out there for sure
Warcraft 3 is a very good game suited for everyone who wants an RTS game to play. It has good depth, great storyline, and competitive (but not as much as Starcraft) online play.
Like Starcrat, and unlike many other RTS games, there are 4 DIFFERENT types of races that you can play. The Humans, Orcs, Night Elves, and the Undead. All have their advantages, disadvantages, and special characteristics. This provides more depth and forced to use different strategies for each race.
The graphics look pretty good, and I don't have any complaints about that aspect. Although it's not as stable as Starcraft, it is very playable and find it enjoyable.
I liked the addition of the option that you can zoom in your camera, and there are some RPG features of the game, particularly on the bonus campaign where you play as Rexxar and his companions. So in this feature, it turns into a RPG-RTS game.
The AI is smart enough to cope with at least to the beginning-high intermediate players of the game. But I find that even easy computers are not very "easy" to defeat, although once you get the hang of it, you can challenge upper levels. That probably gets some beginners to have a troublesome start, but with practice, you eventually claim victory.
I only see one thing that I don't like about this game. It's the economy section. I think they spent too little time on the resource management, although the no-low-high upkeep makes at least the population/food section more realistic. Gold and lumber are two resources that are pretty obvious, and relatively straightforward. I think the economy is too simple to manage. Just gather lumber, find expansions, and that's it. But it doesn't matter too much, because Starcraft and the other parts of this series are like that, too.
I think the population/food limit is too low. 100 food only! In Starcraft, or Age of Empires, or Empire Earth, the population limit was 200 (or more, in the case of Empire Earth). And furthermore, the units have very high demand. Some (like the Mountain Giant) need 7 food! That's more than a battlecruiser (which needs 6), surprisngly. I know they're strong, but a more acceptable demand to me is about 5 food. That prevents large-scale battles from happening much in this game. But that could be the nature that made this game so popular.
But those kind of quirks aren't enough to stop this game from being so good. It's a great game, and I recommend it to anyone to buy it, or at least try it.