Gamescom

Gamescom (stylized as gamescom) is a trade fair for video games held annually at the in, ,. Beginning in 2018, gamescom is organized by game – German Games Industry Association. It is the world's largest gaming event, (measured by exhibition space and number of visitors) with 370,000 visitors and 1037 exhibitors from 56 countries attending the show in 2018 and the biggest gaming news expo of the year in Europe.

Blizzard at gamescom has been one of the exhibitors since the fair's inaugural event in 2009, but only included Heroes of the Storm in its booths in 2014.

2018
Gamescom 2018 was held on August 21 through August 25. On May 15, 2018, Blizzard announced that they would be attending once again. Along with the cosplay contest and live concert, Blizzard also announced new content for their games.

World of Warcraft: Battle for Azeroth, Diablo III for Switch, Starcraft II, Hearthstone: The Boomsday Project, Overwatch, and Heroes of the Storm were available to play at the Blizzard booth.

Heroes of the Storm
The following were revealed before the event and were playable at gamescom:
 * New Hero: Mephisto, The Lord of Hatred
 * Hero Rework: Tyrande
 * Map Rework: Hanamura Temple
 * Key art: Yrel

2017
Gamescom 2017 was held on August 22 through August 26. Blizzard confirmed their attendance on June 8, 2017.

World of Warcraft: Legion, Diablo III, Starcraft II, Hearthstone, Overwatch, and Heroes of the Storm were available to play at the Blizzard booth.

Heroes of the Storm
The following were revealed and playable at gamescom:
 * New Hero: Kel'Thuzad, Arclich of Naxxramas
 * Hero Reworks:
 * Chromie
 * Jaina
 * Leoric
 * Lt. Morales
 * New Event: Call of Kel'Thuzad
 * Animated short: Obey the Call
 * New Skins:
 * Theramore Jaina
 * Dreadlord Jaina
 * Crypt Queen Zagara
 * Deathknight Sonya
 * Key art: Kerrigan with Queen of Ghosts skin

2016
Gamescom 2016 was held from 17 August to 21 August. Blizzard confirmed their attendance on May 27.

World of Warcraft: Legion, Diablo III, Starcraft II, Hearthstone: One Night in Karazhan, Overwatch, and Heroes of the Storm were available to play at the Blizzard booth.

Heroes of the Storm
The following were revealed and playable at gamescom:
 * New Heroes:
 * Alarak, Highlord of the Tal'darim
 * Zarya, Defender of Russia
 * New Event: Machines of War
 * New short: The Machines of War
 * New Maps:
 * Braxis Holdout
 * Warhead Junction
 * Hero Rework: Valla
 * New Skins:
 * Queen of Ghosts Kerrigan
 * Butcherlisk
 * Raider Rexxar
 * Key art: Leoric with Space Lord skin

2015
Gamescom 2015 was held from 5 August to 9 August.

World of Warcraft: Warlords of Draenor, Diablo III, Starcraft II, Hearthstone: The Grand Tournament, and Heroes of the Storm were available to play at the Blizzard booth. Overwatch was playable for the first time in Europe.

Heroes of the Storm
The following were revealed and playable at gamescom:
 * New Heroes:
 * Kharazim, Veradani Monk
 * Rexxar, Champion of the Horde
 * Artanis, Hierarch of the Daelaam
 * Lt. Morales, Combat Medic
 * New trailer: Heroes of the Storm - Kharazim Trailer
 * New Map: Infernal Shrines
 * New Features:
 * Dynamic Bundles
 * Ranked Play changed
 * Key art: Diablo with Archangel skin

2014
Gamescom 2014 was held from 13 August to 17 August. Blizzard confirmed their attendance on June 20, saying it's their biggest ever booth.

Only World of Warcraft: Warlords of Draenor, Diablo III, Hearthstone:, and Heroes of the Storm were available to play at the Blizzard booth.

Heroes of the Storm
The following were revealed at gamescom:
 * New Heroes:
 * Azmodan, Lord of Sin
 * Anub'arak, Traitor King
 * Chen, Legendary Brewmaster
 * Key art: Murky, Raynor, and Brightwing