League Information. Series: Esports_Championship_Series ECS. Organizer: FACEIT Twitch. Game Version: Global Offensive. Type: Online. The latest Tweets from ECS (@ecsleague). The $ Million Esports Championship Series is a revolutionary league feat the worlds best CS:GO teams. London. CS:GO Update - Please update your client before queuing into our system again. If your server is running the old version please call support to have it.