Never played. I want to know if it's a good purchase. If you can post a small review with the pros and cons, I would be grateful.
I'm not much of a reviewer. It was good enough that I bought it twice. It's definitely a good purchase, that and Starcraft are two of my favorite RTS games. It's only $6 on GOG, and was on sale not too long ago (though, I bought it the day before it was on sale X_X).
If you like RTS games at all, you'll probably like it. There are plenty of reviews on the internet, plenty of gameplay videos on YouTube, and even reviews here on GOG. It's a pretty simple game to get into, the gameplay is great, the game can be played at high resolutions, you can easily customize maps, the units you can build, change game speed at any time during matches, control all your units or specific types\groups all at once, trading resources and performing other special options with console-style commands, they pretty much did everything right.
If it was a bad purchase, it wouldn't have almost 1,000 ratings and five stars, now would it? There ya go.