What is a nextbot?

A nextbot is a type of AI-controlled character in the Source game engine, used primarily in multiplayer games. Nextbots are programmed using the Lua scripting language, which allows developers to create complex behaviors and decision-making processes for the bots. They are designed to act and move like human players, making them useful for testing game mechanics and balancing. Nextbots can be customized with different weapons, skins, and animations to make them appear more like real player characters. They are also commonly used in mods and custom maps created by the community.