Experience (summoner)

Experience (XP) is linked to a summoner, and is earned through playing games. Reaching certain amounts of experience increases the summoner's level, up to an infinite amount. Higher levels require more experience, resetting every 25 levels. At each level, players receive up to 4 champion shards, which can be disenchanted to Blue Essence. A summoner level of 30 is required to play ranked games.

Matches
The amount of experience received for a game is determined by several rules: Depending on all these factors, each game awards roughly between 50 and 300 XP, with average values around 100 XP.
 * Wins are worth more XP than losses.
 * Longer games are worth more XP.
 * Wins on PVP Summoner's Rift give approximately base XP plus  XP per minute of game length.
 * Different types of games award different amounts of XP. For instance, the current (July 2011) formula for a Normal game at levels 15-19 is roughly 3m+25, where m is the number of minutes the game lasts, capped at 198. At the same levels, Intermediate Bot games subtract a 25% penalty from that formula.
 * The minimum time any game needs to last to be eligible for XP rewards is 7 minutes.
 * XP Boosts, which can be purchased with Riot Points from the PVP.Net store, increase the XP earned. There are several types of XP boosts which increase the XP acquired in different ways.

First Win of the Day
A daily mission is available for all players. It rewards you with 575 XP when winning a match-made game. After being completed the mission will be available in 22 hours.

Leveling up
Leveling up grants access to new game modes, summoner spells, mastery points, and extras such as loot and champion masteries.

The following table describes the amount of XP required to level up and some of the game content unlocked when reaching each level.

Historical
Prior to V7.22, the level system comprised 30 levels, each represented by a number from 1 to 30. Higher numbers mean more experience. Summoners start their first game at level 1 and progress until they reach level 30 after a variable number of games (typically between 300 and 400). The level system is based on the concept of Experience Points (XP). Summoners accumulate XP by playing games. When they accumulate a certain amount of XP, they progress to the next level. The level progression finishes when the Summoner reaches level 30. Reaching this level is one of the requirements to participate in Ranked games (the others are owning 20 champions and taking part in a series of placement games).