if their publisher blocked them because he has no local subpublisher to handle them you might be able to proxy them.
if your government determines the games to be unwanted content and blocks the streams, not only will it be much more difficult to circumvent but you'll also break your laws and might get into criminal problems that way.
Yes, it depends on the reason for blocking access to the game. Although I used a proxy to boost game accounts. In any case, on the http://wtj5psom5zufu4yo.onion forum you can find ways to bypass the blocking.