Not to be confused with 20px bottom lane or Doom Bots

The term Bot in League of Legends refers to computer controlled opponent (AI - Artificial Intelligence) available in custom games and Co-op vs. AI matches. Bots can have either "beginner" or "intermediate" AI.

On January 24, 2012, it was announced that the bot system would be expanded with more bots, better intelligence and availability on the Crystal Scar.[1] On February 1, 2012, the system was released.[2]

On April 15, 2014, an update to the bot AI was released, primarily improving threat evaluation and the ability to dodge skillshots, as well as updating the item builds used.[3]


Bots can be used for:

  • Practicing against or learning how to play a new Champion;
  • Filling in for missing players to even out teams;
  • Leisurely play for those who do not want to experience such competition between summoners;
  • New players who want to familiarize themselves with the game (champions, maps, items, item builds, champion skills, strategies etc.) before competing with other summoners.

Runes and Masteries

Intermediate bots take 15 mastery points and have 16 runes — five each of Tier 2 Marks/Seals/Glyphs and one Tier 2 Quintessence. Intermediate bots have no increased stats except for a boost to their passive gold gain.[4]

Beginner bots have neither runes nor masteries.[4]

Available Bots

On January 24, 2012 it was announced that new bots would be added to the existing pool.[1] This was implemented on February 01, 2012.[2]

Since this update are 53 of 140 (37.86%) champions available as bots.

Champions with a Owned were available prior to the V1.0.0.133 update.

Prior to V4.7, only 29 champion bots were available in custom games, and could only be at beginner difficulty. Custom games now allow all available bots at beginner or intermediate difficulty.

Adding Bots

To add a bot into a practice game, you must first be the creator or the host of the game. Then, click the "Add Bot" button on the right of the empty slot to add a bot to the corresponding team. Once a bot has been added, you can then change the Champion of the bot by selecting it from the drop-down menu.

Tutorial Bots

In the new tutorial, Battle Training, four new bots appeared, with a high AI, these are: Shen Shen, who plays on the player's team, and Annie Annie, Malphite Malphite, and Nasus Nasus, who opposed the player.

Cancelled Bots

  • During Sona's Sona's release in patch V1.0.0.101, she was unintentionally added onto the bot roster. Bots' names are usually made up of the champion name followed by the word "Bot" (e.g. Annie Bot). However, Sona Sona went by the name "game_bot_sona". She did nothing but autoattack and she was removed from the bot roster with V1.0.0.102. She has been reintroduced as a standard bot with the Rise of the Bot Army update.
  • After the update, Nasus Nasus and Alistar Alistar appear to be scheduled for removal as bots. However, it is possible that they will still be able to be selected in custom games, but won't be available in random player vs AI games. They, together with Malphite Malphite and Sivir Sivir, were unavailable in that mode before the update.

Patch History


  • Intermediate bots can now be added to custom games.
  • All bots are available in custom games.
  • Intermediate bots will now use Flash both offensively and defensively.


  • Improved evaluation of enemy and friendly strength.
  • Improved understanding of tower mechanics and power.
  • Improved behaviours while under high threat.
  • Improved lane rotation decision making.
  • Improved last hitting with auto-attacks both when farming normally and when pushing.
  • Lane behaviors (harassing vs. farming, etc) are now more in line with human behaviors.
  • Bots now attempt to dodge some skill shots.
  • Beginner bots now build recommended items, while Intermediate bots now make more advanced item choices.
  • Bots now scan their surroundings at variable rates depending on difficulty setting and in-game threat level.



  • Added Jarvan IV Jarvan IV Bot for all Co-op vs AI maps.
  • Bots may now make chat messages.
  • Improved retreat logic for bots with dashes.


  • Added Darius Darius Bot for all Co-op vs AI maps.
  • Bots are more likely to use items with actives.


  • Twisted Treeline bots should now favor defending their base over taking altars.
  • Twisted Treeline bots no longer get stuck at the summoning platform when an inhibitor is under attack.
  • Custom game Summoner's Rift bots now use the same push logic as beginner Co-op vs. AI bots, which should address several issues of bots getting stuck on the map.
  • Added a pathing workaround to prevent Summoner's Rift bots from getting trapped in certain areas of the map (e.g. Baron pit).
  • Battle Training bots should no longer get stuck during the tutorial.


  • Cho'Gath Bot Cho'Gath Bot will now increase the damage of Vorpal Spikes when he levels it up.
  • Veigar Bot Veigar Bot will now appear on intermediate difficulty in Co-op vs AI for all maps.
  • Fixed a bug where Summoner's Rift bots would occasionally get stuck on the summoning platform after respawn if enemy champions were nearby.
  • Fixed a bug where Kayle Bot Kayle Bot would idle while trying to attack enemy minions.
  • Bots now properly factor untargetable enemy turrets in threat calculations, making it harder to get them stuck between towers.


  • Intermediate bots now have a chance to use a random skin.


  • Custom game bots now lane properly when allied players are jungling.
  • Battle Training:


  • Changed the way bots evaluate towers to better take into account minions and enemies.
  • Changed return to base logic for bots to make them more likely to heal and purchase items.
  • Dominion bots should now properly ignore invisible units when deciding to defend capture points.
  • Beginner bots are now less likely to assist each other during kill and retreat situations.
  • Bot assist logic now works during the laning phase.
  • Updated Ashe Bot's Ashe Bot's item build.
  • Master Yi Bot Master Yi Bot should now properly purchase Sanguine Blade Sanguine Blade on Dominion instead of The Bloodthirster The Bloodthirster.


  • Bots are now more likely to use abilities while retreating.
  • Bots now properly retreat in their base to the summoning platform instead of getting stuck between the nexus turrets.
  • Bots no longer forget they are being chased.
  • Malzahar Bot Malzahar Bot no longer occasionally cancels Nether Grasp Nether Grasp.
  • Re-enabled Alistar Bot Alistar Bot.


  • Added Alistar Alistar and Dr. Mundo Dr. Mundo to the bot roster.
  • Intermediate bots will now sell their Doran's items to buy an additional item after completing their builds.
  • Beginner bots will no longer purchase elixirs.
  • Updated several bots' item builds.


  • Bots will no longer kill themselves by chasing enemies onto the summoning platform.
  • Fixed a bug where Ashe Bot Ashe Bot would occasionally get stuck toggling Frost Shot Frost Shot repeatedly.
  • Fixed a bug where Shen Bot Shen Bot did not learn all of his abilities.
  • Fixed a bug where bots would use Cleanse Cleanse on knockup and knockback abilities.



  • Added Sion Sion and Vladimir Vladimir to the bot roster.
  • Improved bots' target acquisition while near enemy towers to reduce the amount of tower diving.
  • Improved bots' logic for assisting each other.
  • Bots now properly purchase elixirs after finishing their item builds.
  • Fixed a bug where bots would sometimes randomly path toward the enemy base.



  • Added Blitzcrank Blitzcrank to the bot roster.
  • Improved bots' ability to last hit and reduced how much they push their lanes.
  • Reduced the amount of gold given to bots on Summoner's Rift intermediate.
  • Added the ability for bots to call for help from nearby bots.
  • Improved the precision of skillshots and ground targeted AoE abilities.
  • Minor bug fixes with Leona Bot Leona Bot, Lux Bot Lux Bot, and Shyvana Bot Shyvana Bot.



  • Rise of the Bot Army:
    • Players can now queue to play against a much wider roster of champions in Co-op versus AI.
    • You can see the complete list of added bots here.


  • Bottom and top lane champions switched. The AD carry and support now go to the bottom lane while the tank and bruiser AI go to the top lane.




  • Bots will now properly respond to taunts.


  • Bots are now properly labeled at the difficulties of "new player" and "easy".

May 9, 2009 Patch:


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