| Tournament information | |
|---|---|
| Sport | Counter-Strike: Global Offensive |
| Location | Katowice, Silesian Voivodeship, Poland |
| Administrator(s) | Electronic Sports League |
| Venue(s) | Spodek |
| Final positions | |
| Champions | Fnatic] |
| Runner-up | FaZe Clan |
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|
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| Tournament information | |
|---|---|
| Sport | StarCraft II |
| Location | Katowice, Silesian Voivodeship, Poland |
| Administrator(s) | Electronic Sports League |
| Venue(s) | Spodek |
| Final positions | |
| Champions | Rogue |
| Runner-up | Classic |
|
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The Intel Extreme Masters Season 12 – World Championship or IEM Season 12 - Katowice 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 27–March 4, 2018. The event featured tournaments for Counter-Strike: Global Offensive and StarCraft II.
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.