League of Legends (LoL) is a multiplayer online battle arena video game developed and published by Riot Games for Microsoft Windows and Mac OS X. It is a free-to-play game supported by micro-transactions and inspired by the mod Defense of the Ancients for the video game Warcraft III: The Frozen Throne.

In League of Legends, players assume the role of a "champion" with unique abilities and battles against a team of other players or computer-controlled champions. In the most popular game modes, the goal is to destroy the opposing team's "nexus", a building which lies at the heart of a base protected by defensive structures. 

Each League of Legends game is discrete, with all champions starting off each game fairly weak and progressing by accumulating gold and experience over the course of the game.

vCalc's League of Legends folder contains equations pertaining to LoL.