A free mod for Mount & Blade II: Bannerlord, by Vaeringjar.

If you like the game but find that the AI is not challenging enough, this modification is for you. Now you can make as big a party as you want, even if the player is a dwarf. The only downside is that your troops will eat more and therefore be more expensive.

As for the gameplay, your units will move much slower and be harder to control, but this can be fixed by adjusting the player controls. The way to install the mod is to download it from the store. Once the download is complete, open the file and place it in the “Modules” folder of the game.