The Intel Extreme Masters Season 12 â World Championship or IEM Katowice 2018 was the world championship for the twelfth season of the Intel Extreme Masters. It was held at the Spodek in Katowice, Silesian Voivodeship, Poland from February 27âÂÂMarch 4, 2018. The event featured tournaments for and StarCraft II.
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The group stage used a double elimination format, with the top 3 teams from each group of 8 moving on to the playoffs in the Spodek. The top team in each group earned a bye to the semifinals. All matches were played as best-of-threes except for the first round, which were played as best-of-ones, and the grand finals, which were played as a best-of-five.