The OMEN Atlantic Challenge is an international Counter-Strike: Global Offensive that aims to bring some of the best CSGO teams in Portugal, Spain, Brazil and the rest of Europe to Lisbon. The tournament will be divided in three phases: Open Qualifiers, Closed Qualifiers and Main Event. The main event will be played live, at the esports stage of Lisboa Games Week, in the 23rd and 24th of November, with four teams: the winners of La Copa, the champions of the Portuguese League of Counter-Strike, the winners of the Brazilian Qualifier and the winners of the Closed Qualifier. The games will also be played in a double elimination format with all matches bo3 and a bo5 final. Seeds will be randomly drawed.