League of Legends is an action RTS video game developed and published by Riot Games for Microsoft Windows, inspired by the popular DotA All-Stars map for Warcraft III. It was first announced on October 7, 2008, and released on October 27, 2009. The game was in a closed beta from April 10, 2009, to October 22, 2009. It then transitioned to open beta until release.
Players are formed into 2 even teams of Champions, 3v3 or 5v5. Each team starts at opposing sides of a map in an area called the Spawning Pool, near what is called a Nexus. A match is won when either team's nexus is destroyed. To destroy a Nexus, each team must work through a series of Turrets. Turrets are often placed along a path to each base referred to as a Lane. Along the way, each player gains levels from killing the opposing team's champions and Minions (small NPCs that constantly spawn and attack the other team) and defeating neutral monsters (some of which grant buffs known as crests upon death). Completing objectives rewards players with gold which is used to purchase items.