League of Legends is a multiplayer online battle arena where players control a "champion" within short PvP or bot battles. As of February 27, 2014, there are 118 different champions from which to choose, all of which are classified by type (such as assassin, tank, or support), which indicates the champion's gameplay style. Players gain levels from killing the opposing team's champions, controlled by other players or bots, and minions that regularly spawn and attack the other team's turrets, minions, and champions. In the classic game mode, the map is typically divided into three "lanes", which are paths that spawned minions take; the "jungle", an area between lanes where neutral monsters spawn; and "bases", where players spawn and can purchase items. The three lanes are composed of the bottom, mid, and top lanes, which different champions tend to battle on based on their respective types. The jungle is sometimes considered a lane, where some champion tends to roam in order to collect buffs and assist in the other lanes freely. The player earns a small amount of gold every second passively, but can earn more by getting the last hit on minions, destroying enemy towers (referred to as turrets) that guard the lanes, killing neutral monsters located in the jungle, and killing enemy champions. With this gold, users can buy a variety of items to strengthen their champion for the remaining duration of the game. On the classic Summoners Rift, Twisted Treeline, and Howling Abyss maps, the game is ended by destroying the enemy team's last structure on the map, called the "Nexus", from which minions spawn. Other maps have variations of rules and objectives, such as Dominion on the Crystal Scar map, where each team's Nexus loses health if the opposing team controls at least three of the five towers located around the map.