Chrome plugin that makes free VPN for a given country, but not HolaVPN?

Question

VPN

I'm looking for a plugin for Chrome that makes a free VPN for a given country.
HolaVPN used to be good, but has started extorting the purchase of a premium version for certain domains, so now it's going down the drain.
What are the alternatives?
It is important that it is free, works and does not extort registration or a premium version.