Smallville – Create generative agents for simulations and games
Smallville can be used to create NPCs with the same level of realism as human players without having to pre-program interactions. The agents store and retrieve past memories which they use to create plans so they can decide where to move, what to say, and how to react to observations. Agents are also capable of interacting with the world around them to change the state of objects on their own. This project was intended to make it easy for anyone to create custom simulations and my attempt to recreate Generative Agents: Interactive Simulacra of Human Behavior. I’ve been working on Smallville…
Smallville – Create generative agents for simulations and games launched on May 17, 2023 with 112 votes, #414 of 4,910 launches that month and more than 95% of that year's launches. The site was still online in September 2026, 3 years on.
In plain words
Smallville is a tool for creating realistic NPCs in simulations and games that behave without pre-programmed interactions. The agents store memories, make plans based on past events, and decide where to move, what to say, and how to react to their environment. They can also modify objects in the world around them. Designed for anyone building custom simulations, Smallville aims to recreate the behavior complexity of human players through generative agent technology.
written from the facts on this page · September 2026
From the sources
Generative Agents for video games. Based on Generative Agents: Interactive Simulacra of Human Behavior - nmatter1/smallville
In the maker’s words, at launch
Smallville can be used to create NPCs with the same level of realism as human players without having to pre-program interactions. The agents store and retrieve past memories which they use to create plans so they can decide where to move, what to say, and how to react to observations. Agents are also capable of…
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Launched alongside, May 2023
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