What is Dota 2?
Dota 2 is free-to-play multiplayer online battle arena (MOBA) and the sequel to the hugely popular Warcraft 3 modification Defense of the Ancients. It is known for its competitive scene and has since 2011 given out over $23 million in prize money, more than any other game.  Over 10 million players play Dota 2 every month and it’s one of the most popular games today

How is Dota 2 played?
In the game players are split into two teams (Radiant and Dire) consisting of 5 players each where the main objective  is to destroy the other teams Ancient, a large structure in each base. You can pick from over 108 heroes all with their own unique abilities and playstyles. Every hero begins at level one and as the game progresses you accumulate experience which can be used to upgrade your abilities and stats.

The map has three different lanes, the top, mid, and bottom lane and each leads to the other teams base. These lanes spawn waves of creeps every 30 seconds and killing them grants your hero experience and if you land the killing blow on the creep you are also awarded with gold. The gold can be used to purchase items from the different shops located on the map. Every lane also has 3 towers that attack any creeps or heroes that are near it and they have to be destroyed in order to make the enemy base vulnerable.

Dota 2 tournaments

Starladder

Having started in 2011 this is possibly the most famous tournament outside The International. It features some of the best teams from Europe,America,SEA and China. They run a online group stage for each region and those who qualify travel to the lan event held in Ukraine. The latest season gave out over $250k in prize money.

More info: http://wiki.teamliquid.net/dota2/Star_Ladder

Dreamleague

Run by Dreamhack this is also a very big tournament. It features top teams from all regions with online group stages and finals held at Dreamhack Summer and Winter every year.

More info: http://wiki.teamliquid.net/dota2/DreamLeague/Season_2

XMG Captains Draft

A online tournament run by the popular youtube channel Dotacinema. What differs this tournament from others is that all the matches are played in Captains Draft instead of Captains Mode. This often results in much different hero picks and a lot of upsets by lower tier teams.

More info: http://wiki.teamliquid.net/dota2/XMG_Captains_Draft_2.0

ESL One

Electronic Sports League (ESL) arrange several dota 2 tournaments every year. This year they have had ESL One New York which was played in  Madison Square Gardens and ESL One Frankfurt  in Commerzbank Arena, a football stadium with a capacity of more than 52.000.

More info: http://wiki.teamliquid.net/dota2/Electronic_Sports_League

The Summit

A tournament organized and casted by the popular dota 2 studio Beyond The Summit with 2 events each year. It features the best teams from all regions and finals held at the BTS studio.

More info: http://wiki.teamliquid.net/dota2/The_Summit