League of Legends
League of Legends is an action RPG MOBA game similar to Defense of The Ancients (DOTA or DOTA 2). Your team defends its base while it tries to destroy the opponents. You kill enemy npc creeps for experience and gold which you can use to purchase items for your hero. Compared to other games of this genre, it is very noob friendly. There is no denying of allied creeps, a feature found in most other games of this type.