Subscribe to download
Improved Bots (Advanced)

Simply subscribing to this addon isn't enough. There is a config file that you need to make a simple edit to in order to get the advanced features of this addon to work properly. If you do not want to do this you can subscribe to the simple version of the addon instead here.

After subscribing to this addon, navigate to the location that the game is installed (if you are unsure, right-click the game in your Steam library, go to properties, then the local files tab, and click on the first button to browse the local files). From here, open the left4dead2 folder, then the cfg folder. Now open the listenserver.cfg file (with any text editor, such as Notepad) and copy/paste everything from this post into that file. Save and exit.

In addition to unsubscribing you will need to delete everything in the listenserver.cfg file, so it is empty like it was before you edited it.



This addon makes several changes to bots to make them act more like human players and make them more reliable as teammates. They can use melee weapons, rescue you if you die, react quicker to a teammate being attacked by a special infected and much more.

NOTE: While this addon does improve the bots, it doesn't make them perfect. There is no way for me to fix every issue with the bots, but I have improved them in the areas that are possible. I realize they still aren't ideal teammates.

• Allows you to play versus, survivial, scavenge and realism modes in single player with bots.
• Bots can use melee weapons. (Can be toggled)
• Bots will continue to play after you have died instead of ending the game.
• Bots will react much faster to a player being attacked by a special zombie.
• Bots can perform some simple actions, such as closing safe room doors.
• Bots will move around a player instead of shooting through them.
• Bots are much more likely to save their first aid kits for a player.
• Bots will try to stay in a tighter group with the player.
• Control the bots with a few commands. (Press ALT)
• Easily change the map and game mode while in-game. (Press F1)
• Easily take control of another bot anytime during a game. (Press F2)
• Easily change the difficulty of the game at any time. (Press F3)
• Teleport bots back to you if they get lost or stuck. (Press ALT)

• Works for all official game modes.
• This addon overwrites binds for keys: ALT, F1, F2, F3, F5, F6
• Scripts in your autoexec.cfg file will overwrite this addon's settings, if you want to set custom binds.
• Using bot commands will block Steam achievements for the rest of the campaign you're playing.
• The bot commands won't work on unofficial maps unless they're started through the console.
• Console commands if you don't have F-keys: bots_radial, maps_radial, char_radial, diff_radial
• Other console commands: cycle_chars, bots_toggle_move, bots_toggle_fire
• This version of the addon is ideal for single player.



Unfortunately, the modding system for this game is very, very limited. However, installing SourceMod[sourcemod.net] will allow you to do significantly more with the game than a workshop addon ever could, through additional plugins. SourceMod is intended to be used for servers but can also be used for single player games! Here are some related plugins you may find useful:

• AutoHelp[forums.alliedmods.net]
Help yourself up when incapacitated, rather than relying on the bots to help you.
• Defib using Bots[forums.alliedmods.net]
Allows bots to use defibrillators to revive you if you die.
• Gear Transfer[forums.alliedmods.net]
Allows bots to pick up throwables and hand them to you when you aren't holding one.
• ScavengeBots[forums.alliedmods.net]
Allows bots to pick up gas cans required for finale events in certain maps.
• Survivor Bot Takeover[forums.alliedmods.net]
Automatically take control of a bot when you die.

SourceMod install and setup video