The Refer-A-Friend program is the reward system Riot Games Inc. created to motivate players to recruit friends for the game. On 25-Apr-2012, Refer A Friend 2.0 was released.[1]
Referrals can be accumulated by sending out an email using the form on the referrals page, or with your account's personalized referral link. Referrals will be accepted from both EU and US; it does not matter which server they sign up with.
This system was active until 5-Sep-2015.[2]
Last Version (Discontinued)
Version 3.0
Refer a friend Rewards.
(
Grey Warwick and 
Medieval Twitch)
Players can Refer-a-Friend five times, each time getting IP and/or with an Exclusive skin when they reach level 10. Obtaining Riot Points will no longer be available with this system.
- 1 -
1000, "Recruiter" forum title and badge - 2 - 1000
- 3 - 1000; Exclusive Grey Warwick skin, Warwick champion and "Senior Recruiter" forum title
- 4 - 1000
- 5 - 1000; Exclusive Medieval Twitch skin, Twitch champion and "Master Recruiter" forum title
Past Versions
Original version
Every time someone that you have referred reaches summoner level 5, the player that invited him is eligible for a reward. Every friend that reaches level 5 will let you a 4-win 
Influence Points boost that you can redeem whenever you want. In addition, every time you reach one of the following reward tiers, you will receive a unique reward.
- 1 - "Recruiter" forum badge
- 10 - 975 (sometimes stated as "tier 3 champion")
- 25 - "Recruiter" forum title
- 50 - Grey Warwick champion skin
- 100 - The League of Legends Digital Collector's Pack
- 150 - "Senior Recruiter" forum title
- 200 - 10,000
- 250 - "Master Recruiter" forum title
- 350 - Ultra-rare champion skin [3] - Medieval Twitch
- 500 - Get your name added to the “Wall of Fame” in the Riot Office
- 1,000 - A content element will be named after your summoner
- At least seven people have unlocked this before the referral policy was altered by Riot:
- Ohmwrecker - The Masked Gamer, a Youtuber, with the Ohmwrecker, and song of the same title.
- Grez, who initially had a now removed monster named after him, was then honored with Grez's Spectral Lantern.
- Athene, the namesake of Athene's Unholy Grail.
- Wriggle, who is also a character in Touhou Project, got now removed item Wriggle's Lantern
- Malmortius, immortalized in-game with the item Maw of Malmortius.
- TotalBiscuit, The Cynical Brit, the sweetest item named after him - Total Biscuit of Rejuvenation.
- Tim Buckley, a character from his Ctrl+Alt+Del webcomic was featured as Zeke's Herald / Zeke's Harbinger, is now featured as Zeke's Convergence.
- Wooglet, who had the Wooglet's Witchcap named after him.
- Ohmwrecker - The Masked Gamer, a Youtuber, with the
- However, there is someone, who unlocked this after this was altered:
- Sterakdary, has Sterak's Gage named after him.
- Sterakdary, has
- At least seven people have unlocked this before the referral policy was altered by Riot:
- 5,000 - All current and future content permanently unlocked.
- 10,000 - All expenses paid trip to visit Riot Games and develop a champion with the Riot Design Team (the expenses may not exceed $5,000)
- Tim Buckley lost his chance to design a champion after suggesting an eccentric Spider-Shark champion based on the Japanese horror manga, Gyo. Because the theme didn't fit with the lore, he only visited Riot Games HQ.
Version 2.0
Players earn 250 each time a referral reaches level 5 and milestone rewards as they reach level 10. Milestone rewards are one time only prizes unless otherwise noted, and are unlocked once the appropriate number of level 10 referrals is obtained.
- 1 - 500, "Recruiter" forum title and badge
- 2 - 500
- 3 - 500
- 4 - 500
- 5 - 500 and a Rune Page
- 10 - 975
- 25 - Exclusive Grey Warwick skin, Warwick champion and "Senior Recruiter" forum title
- 50 - 2,000 and Medieval Twitch
- 75 - 4,000
- 100 - 10,000 and "Master Recruiter" forum title
- 150+ - 5,000 for every 50 referrals after 100