DOTA 2

Dota 2 is a multiplayer online battle arena (MOBA) video game and the stand-alone sequel to the Defense of the Ancients (DotA) mod. Developed by Valve Corporation, the game was officially released on July 9, 2013 as a free-to-play title for Microsoft Windows, concluding a beta testing phase that began in 2011.OS X and Linux versions of Dota 2 were released on July 18, 2013. In most regions, Dota 2 is exclusively available through Valve's content delivery platform,Steam.

Each match of Dota 2 is independent and involves two teams, both containing five players and each occupying a stronghold at either end of the map. Located in each stronghold is a building called the "Ancient"; to win, a team must destroy the enemy's Ancient. Each player controls a "Hero" character and focuses on leveling up, collecting gold, acquiring items and fighting against the other team to achieve victory.

Development of Dota 2 began in 2009, with the hiring of DotA developer "IceFrog" to serve as the sequel's lead designer. Dota 2 was praised by video game critics, who lauded it for remaining faithful to its predecessor while also increasing the level of production quality, as well as for its engaging and rewarding gameplay experience. However, Dota 2 was criticized as having a steep learning curve and inhospitable community. The game has become the most played on Steam, with daily peaks of over 700,000 concurrent players.

A match of Dota 2 prominently features the strongholds of two opposing factions, the Radiant and the Dire, containing critical structures called "Ancients", which are defended by a number of lesser buildings. The bases of the two factions are connected by three main paths, referred to as "lanes", which are guarded by defensive towers, as well as groups of periodically spawning autonomous units called "creeps" that traverse each lane attacking any enemy units or structures in range. Towers and creeps serve to divide the map between the two teams, and are often the focal point of skirmishes. The Dota 2 map is functionally symmetrical, despite having a number of critical differences conferring a variety of advantages and disadvantages to each side. The Radiant is based at the southwest corner of the map, while the Dire is based at the northeast corner; the two sides are divided by a river which runs perpendicular to the central lane. The two teams, typically composed of five players each, are pitted against one another to compete as the defenders for their respective Ancient. Featured across the map are units referred to as "neutrals", which are not aligned to either faction and are primarily located in the forests; they constitute a fixed but recurring resource, though their strategic value may vary depending on the teams' and players' choices. Located on the southeast side of the river is a "boss" called "Roshan" who typically takes multiple team members to kill. Following his death, Roshan drops items that can significantly alter the course of a game. 

           

there i give you two links for more information:

dota 2 page: www.dota.com

dota 2 channel in youtube: https://www.youtube.com/user/RUDota2TV