This is the best game ever made. I really like it because when you're playing this best game on high quality servers with literally no AFKs, smurfs, совиет унион players, you're also lerning some other stuff that are:
- working in group as everybody has their own role;
- learning foreign languages;
- stress control, improving quick thinking and decision making;

I definetly recommend this game to everyone, so give it a try for a couple of thousand hours and see if it's for you.