From the exorbitant numbers of Russians playing DotA and CS:GO I would assume there is a significant part who enjoys playing online games.
And while, sure, there are numerous examples of alternative networks / cracked servers etc., If you want to participate in “real” community of one of these games, you’ll have to use an official client.
The official online community of a multiplayer game. E.g. there are numerous private WoW servers, but the biggest and most relevant community plays on the official servers.