ARAM, the acronym for All Random All Mid, is a supported PvP game mode in League of Legends. Upon entering champion selection, ten summoners, five on each team, randomly summon a champion from their available pool of champions (owned and free play). They are allowed to "reroll" their champion, based upon reroll points (a maximum of 2 rerolls can be saved up at once), which are gained by both playing ARAM games and having a diverse champion pool. Players may also try to trade with teammates if both players have both champions available to them, whether through purchase or the current weekly champion rotation.
All Random All Mid (ARAM) was originally played as a custom game on the Summoner's Rift map. Many players enjoyed the gameplay change, focusing only on 5v5 fights with no lane phase or jungling. A small community of players crafted a set of standard rules for this type of game. ARAM quickly became the most popular type of custom game and the community vocally asked Riot to formally support the game mode. After some time, the Proving Grounds map was revamped from being solely for tutorials, to a playable one lane map. Later, the Howling Abyss was released as a new ARAM map, replacing the Proving Grounds, along with the Freljord update and ARAM was was made an official queue. This was the first and only time a custom game mode created by players became an official game type of League of Legends.
ARAM is played on the Howling Abyss Field of Justice. The map consists of a nexus, two nexus turrets, an inhibitor, an inhibitor turret, and an additional turret on each side. Bushes are located along the top of the lane, with two Health Relics (per side) and some Poros.