https://xgamers.gr/2011/08/cross-platform-multiplayer-%ce%bc%ce%b5%cf%84%ce%b1%ce%be%cf%8d-ps3-%ce%ba%ce%b1%ce%b9-pc-%ce%b5%cf%80%ce%b9%cf%84%cf%81%ce%ad%cf%80%ce%b5%ce%b9-%cf%84%ce%bf-counter-strike-go/