DreamHack is an ESL Gaming brand specializing in esports tournaments and other gaming conventions. It is recognized by the Guinness Book of Records and Twin Galaxies as being the world's largest LAN party and computer festival with the world's fastest Internet connection and the most generated traffic. It usually holds its events in Western Europe and North America. Events summary. DreamHack's events include local area network gatherings with live concerts and competitions in digital art and esports. The first event was held in Malung, Sweden.
https://en.wikipedia.org/wiki/DreamHack