[devicenull]

This plugin will allow you to create additional bots in the game. Using this, you can have anywhere up to 12 bots in the game.

Note that human players don't seem to be able to take control over the additional bots, but I could be wrong.

There's only one command:
sm_l4dbot - Requires the "cheats" admin flag, and will add a bot to the game. Note that typically you want to use this a few times fairly quickly.

The plugin relies on creating fake players, so if you do not have 4 human players playing, you may need to use it 4 times before you actually see any result.

The fake player it creates will be kicked after 30 seconds, at which point the normal survivorbot AI will take over.