Riot Games has updated the formats of the major international League of Legends tournaments — Mid-Season Invitational and Worlds. In 2025, the number of participants, qualification, and tournament structure have changed. The announcement was made on the official page of the tournament operator on X.

MSI now includes 10 teams — the top two from each major region. The main changes in the championship format:

• The MSI winner automatically qualifies for Worlds.
• The region that finishes second receives an additional, fourth slot at Worlds.
• Champions of each region and the runner-up from the First Stand-winning region advance directly to the Bracket Stage.
• The remaining four teams start from the Play-In, playing in a bo5 GLS format. Two teams with 2-0 and 2-1 results advance to the playoffs.
• The Bracket Stage will be held in a bo5 double-elimination format.

The World Championship for LoL also received an updated format. The main changes:

• Play-In: Four teams from regions (LCK, LPL, LEC, and LTA) with additional slots will play one bo5 match. The winner advances to the main stage of the tournament.
• Swiss Stage: 16 teams (3 from each region + Play-In winner) will play 5 rounds. The 8 teams that first achieve 3 wins will advance to the playoffs.
• Playoffs: 8 teams will compete for the championship title in a bo5 single-elimination bracket.

The changes increase the number of teams and revise the qualification system, giving regions with strong results a better chance on the international stage. MSI will be held from June 27 to July 12 in Canada, and Worlds will traditionally be held in China in the fall.