Custom game

Custom Games are games for 10% reduced experience which allow you to play against and/or alongside players and/or bots.

Bot Order and Laning in Custom Games
Contrary to popular belief, it is possible to control which bot goes to which lane during the custom game set-up process. When adding bots to your custom game, disregarding any humans players on either team, the bots will go to a lane as follows:

1st and 4th bots go bottom, 2nd and 5th bots go top, and 3rd bot goes mid.*

Again, when sorting this, completely disregard any human players. A player can be in any position on the team, the game will simply work from the top down, assigning a lane to each bot (hence why when you play a solo-player 5v5 custom, the lane spot left open for you will always be at top lane, since there's not a 5th bot to take that position).

EDIT: As of the Jayce Patch on Fri, 2012-07-06, bots now adapt to player lane choices. Let's say you go mid. The bots will parse this and take their places at top and bottom lane.

Custom Game Types
Custom games are created by the playerbase, each with their own set of rules. Because they are unofficial variations of the game, following the rules is purely honor based. Popular variations include:
 * All Random All Mid (now an officially supported game mode)
 * All Draft All Mid
 * All Yordle All Mid
 * All Random All Bot (played on Dominion)
 * All Random All Bridge
 * All Random Get Shields
 * Draft Racing
 * Hardcore PVP
 * Protect the Soraka Bot
 * Catch The Teemo
 * Catch The Yeti
 * Find The Teemo

All Random All Mid
These rules only apply to the old Summoner's Rift version of ARAM.
 * Standard Rules ARAM NA
 * Standard ARAM Rules EUW

Standard Rules

 * No side laning/bushes/jungle.
 * No recalling or walking back to base.
 * Other healing, from skills or items, is allowed.
 * Buy items when you die.
 * Snowball items ( and ) are not allowed.
 * does not count as a snowball item and is allowed.
 * No attacking neutral camps or side-lane creeps by any means.
 * No or.
 * No.
 * You cannot attack side-lane inhibitors or towers.
 * You may defend top or bottom inhibitor only when the adjacent tower has been destroyed.
 * No defending top / bottom in base towers.
 * Suicide. NA servers allow to be Executed by Mid Towers / Mid Minions and once dead you are able to purchase items.
 * EU West - If a death is the result of an Execution, you may not purchase items.
 * Global suicide ( or ulting past living towers) is not allowed to go past first live tower.

Possible rules variations
If you are going to host with variations in the rules, you should announce the changes before the game starts.
 * Allowed to Heal / Purchase if Inhibitor is down and only if Inhibitor is down.
 * Suicide may not be allowed.
 * No elixirs.
 * and may be allowed (individually).
 * Global suicide may be allowed (independant of normal suicides).

All Draft All Mid

 * Follows the same rules as ARAM (All Random All Mid), the only difference being that the champions are select via Draft Mode.

All Yordle All Mid

 * Follows the same rules as ARAM, the only difference being all champions selected must be a Yordle (e.g., , . )

All Random All Bot (Dominion)

 * Only the area from bottom lane to the bottom speed shrine is allowed.
 * On EU West you are only allowed to go to the mid heal point. The side ways with the bushes are forbidden. See here.
 * No recalling.
 * Other healing, from skills, items, or heal points are allowed.
 * Buy items when you die.
 * No or.
 * No.

All Random All Bridge (see ARAM)

 * Proving Grounds on bridge
 * All random selection
 * Otherwise normal ARAM

All Random Get Shields (Dominion)

 * The main goal of this mode is to capture the Storm Shields located at the center of the Dominion map 7 times.
 * No recalling.
 * Any summoners spells and items are allowed
 * No capturing any point
 * Only 2 players on the same team can be capturing the shield at the same time
 * Damage traps cannot be placed near the shields
 * In order to capture one team's 7th shield, both shields have to be up.

Draft Racing

 * A Game variant where the goal is to get into the enemy spawn and die via the Super Turret located in the enemy Spawn Pool. Jungling and laning is prohibited, unless an inhibitor is down and you must defend against Super Minions. The item Banner of Command is prohibited. Also, all champions are selected via Draft Mode. Sub-Variants of this game-type include Random Racing, a variant where champions are selected randomly, and Team Racing, where you choose what champions you want to use.
 * http://draftracing.webs.com/rules.htm

Hardcore PVP

 * This mode is rumored to be (as the tittle states) a hardcore PVP situation, in whitch you farm no minions or Jungle mobs, but instead fight to the death.

Protect the Bot

 * Game variant where all normal game rules apply, but the goal of the game is to kill, (in any way), the enemy Soraka Bot until she has died 10 times. No spells or items are prohibited, everything is fair game in this game variant. This game type is also known as "Protect the Queen."

Catch the

 * This game mode has a time limit of 10 minutes in which the attacking team (the team without the Teemo) must kill the Teemo 2 times while the Defending (the team with the Teemo) must protect him for 10 minutes. While the Teemo cannot leave the jungle, must keep moving to stop his passive from activating, cannot run through mid lane, cannot run in between the towers, and cannot run back or recall, everyone else can.
 * To Catch The Teemo

Catch the Yeti

 * Limit of 10 kills against the enemy's . The objective of "Catch the Yeti" is to kill the other team's Nunu while also defending your own Nunu. The first team to kill the opposing Nunu 10 times (or 5 for a much shorter game) wins. There is no experience gained from minions, including jungle creeps. This means that Nunu is unable to use his Consume, and is therefore very limited in terms of abilities. Nunu cannot return to base without giving the enemy a point.(In short it's the same rules as catch the teemo)

LoL Football

 * This game takes place on The Proving Grounds, in Draft Mode. There are 4 players on each side. The attacking team must get killed by the Nexus Obelisk without it counting as a kill for the defending team. The score is calculated by taking the total deaths for the attacking team minus the kills for the defending team. The half ends when the defending team destroys the attacking team's Nexus. You then switch sides in the next game. Whoever has the most points wins. Ultimates that can teleport across the map are prohibited, along with . is banned.

Find the

 * This game variation is either played on Dominion or Summoner's Rift. In contrast to Catch The, in this game mode the 's on each team have a preset time to hide anywhere on the map and let their Innates activate. As soon as both are invisible, both teams have to find and kill the enemy  before the enemy team does.

Hide and Seek

 * This game variation is usually played on Dominion, but can also be played on Summoner's Rift. Draft Mode is highly recommended, although Blind Pick and Random Pick are both possible.
 * The Time Limit can be 40 or 45 minutes.
 * The blue team consists of 5 hiders, and the purple team has 2 seekers.
 * When the game begins, the hiders will have until 2 minutes on the game clock to move to any spot on the map before the seekers may exit their base and look for them.
 * Hiders may use only CC moves to help them or another hider escape. Heals, shields, and certain other moves are allowed.
 * Each hider has five lives. When a hider dies, they lose a life. When a hider loses all their lives, they are OUT and may not participate in the game any longer. They may, however, run around the outside of the Dominion map.
 * Once a hider has respawned, they are allowed a 30-second grace period in which they can enter the map without hindrance from the seekers.
 * Hiders may NOT recall, stay at base, or walk back to base at any time.
 * Standing at the entrance of the base, however, is allowed.
 * Items are limited to non-slowing items and no Guardian Angel.

Ultimate Bravery
Ultimate Bravery is a custom game mode at League of Legends that is played by following a random build of masteries, summoner spells, items, non-ult skills to max first and a champion. Any player should follow his random build because he/she should.

Original idea by Mageganker.

Rules
In addition, it is a favor you did the God of Courage : the more your summoners are bad, the more victory will be rewarding. Dishonor on your whole progeny if by chance you took the desire to choose another spell while your selection is available ! Doransare for weaklings. You, you must run fast to rush into the crowd ! Being first in line: this is your goal. Then you must purchase the items in the order listed, always starting from the leftmost. If you have a stack item to last, so much the better: you will not surrender to 20 minutes either ! I imagine that at night, you do not turn on the light in your home to see the obstacles ... Then do the same on the field of the League ! If ever a doubt you took on the bush that you are about to cross, well go for it, you'll be set ! So, your teammates will verify that no weakness goes through your head.
 * 1) Love Champion, you will: Once you have your choice of champions and you press the button to start your Ultimate Bravery, you can not go back !You have to choose the champion displayed on your screen, even if an atomic bomb would explode near you.
 * 2) Activate your summoner spells, you will: Even if you fall on Rally / Resurrect, it is your duty to make good use throughout the game.
 * 1) Max your main spell, you will: If you want to prove that you got balls (or ovaries for girls), you should put your skill points in priority in the spell that you have been assigned (Q,W or E).
 * 1) Build in the right order, you will: Having boots in the early game, it roxx !
 * 1) Forget wards, you will: What is the advantage of seeing the enemy arrive ?
 * 1) Prove your choices, you will: Since a courageous person does not trust anyone, you must copy / paste your "Bravery" at the beginning of each game.

Alternative Rules (Host's rules)

 * Players may pick if Random lanes or Duo lanes. Depending in host's preferences.
 * Players may buy or not potions depending host's choice.
 * You can customize the build given for any map of League of Legends.
 * It is mostly played at Summoner's Rift.