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October
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10.27.2009
Launch – 10/27/2009
League of Legends was officially launched in both North America and Europe. The game featured 40 playable champions...
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November
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December
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October
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January
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February
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March
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3.30.2010
Twisted Treeline – 3/30/2010
The highly anticipated Twisted Treeline map launches. Built from the ground up, Twisted Treeline offers faster paced 3v3 gameplay...
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April
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May
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June
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July
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7.13.2010
Season One – 7/13/2010
Season One marks the largest content update to date and the start of the first major competitive season for League of Legends. Season One includes many new game features...
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August
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September
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October
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November
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11.3.2010
Battle Training - 11/3/2010
Set on the Summoner’s Rift map, Battle Training coaches new players on the many nuances of the game...
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December
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12.14.2010
Automated Leaver Banning - 12/14/2010
League of Legends introduces the latest addition to LeaverBuster: Automated Leaver Banning...
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January
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January
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1.19.2011
AFK Detection - 01/19/2011
The LeaverBuster system is now able to detect those players who refuse to actively participate in games in addition to those who overtly quit...
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February
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2.15.2011
Co-Op versus AI - 02/15/11
The addition of Co-Op versus AI afforded new and veteran summoners alike a place to test their skills against AI bots rather than other players...
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March
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April
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May
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5.24.2011
The Tribunal - 05/24/2011
Tribunal is launched, giving the community the opportunity to govern itself through the new service...
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June
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6.18.2011
Season One Championships 06/18/2011
On this date, the epic conclusion of League of Legends premier competitive season took place at DreamHack in Jönköping, Sweden...
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July
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August
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September
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9.13.2011
End of Ladder Season One – 09/13/2011
Ladder Season One came to a close with the recognition of all those players who participated in making the premier season a competitive success...
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9.26.2011
League of Legends: Dominion – 09/26/2011
Dominion, a brand new map and game mode, and one of the largest updates ever to be made to League of Legends, brings with it exciting and innovative new gameplay!
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October
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November
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11.22.2011
New Masteries – 11/22/2011
The start of Season Two brought along an overhaul of the Masteries system, providing players with even more strategic options for their champs...
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11.22.2011
League of Legends Season Two Launch – 11/22/2011
Season Two officially launched in all territories on this date, bringing a host of new features to League of Legends...
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December
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January
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January
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February
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March
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April
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4.27.2012
Spectator Mode Full Release - 04/27/2012
The spectator mode open beta came to a close, bringing the full release of Spectator Mode to summoners all over the world!
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May
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June
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July
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August
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September
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October
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10.1.2012
Honor Initiative - 10/01/2012
When the game’s over, award Honor to players who helped make the match a positive experience!
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10.13.2012
Season Two Championships - 10/13/2012
On this day, the epic conclusion of League of Legends second competitive season took place at the Galen Center in Los Angeles, California...
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November
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11.12.2012
End of Season Two - 11/12/2012
Season Two officially came to a close on this day. All players who participated in the competitive ladder earned rewards based on the top rating they achieved.
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December
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12.3.2012
Preseason Update - 12/03/2012
We were extremely pleased with Season Two, but we think there’s always room to make the League of Legends metagame even better.
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January
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January
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February
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2.1.2013
League of Legends Season Three Launch - 02/01/13
The best teams in League of Legends esports took their first steps on the road to the World Championship.
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2.1.2013
New League System - 02/01/13
In Season 3 we introduced a new league system to provide more challenges for competitive players and a greater sense of progression for newcomers.
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March
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April
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January















































































































