Simtown: A 2D Role-Playing Game Where Characters Talk, Move, and Act
Building on the concept of generative agents and the success of c.ai, we created Simtown.ai, a 2D NPC simulation where each NPC leverages OpenAI APIs to plan, act, reflect, and adapt. The gameplay is dynamic and immersive—NPCs can move, talk, and idle in scenarios like Harry Potter Town or perform role-specific actions such as voting, giving speeches, and listening in Election Town [https://app.simtown.ai/electiontown]. We’re currently working on features like saving and loading game states, allowing users to create their own NPCs, and enabling user-personas to evolve over…
Simtown: A 2D Role-Playing Game Where Characters Talk, Move, and Act launched on December 1, 2024 with 15 votes, #999 of 5,365 launches that month and more than 75% of that year's launches. The site was still online in September 2026, 1 year on.
In plain words
Simtown is a 2D role-playing game where AI-powered NPCs plan, act, and respond dynamically to player interactions using OpenAI APIs. Characters move, talk, and perform scenario-specific actions across themed towns like Harry Potter Town and Election Town. Players can observe NPCs reflecting on their experiences and adapting their behavior, creating an evolving simulation. The game is designed for players interested in interactive storytelling and AI-driven worlds.
written from the facts on this page · September 2026
From the sources
In the maker’s words, at launch
Building on the concept of generative agents and the success of c.ai, we created Simtown.ai, a 2D NPC simulation where each NPC leverages OpenAI APIs to plan, act, reflect, and adapt. The gameplay is dynamic and immersive—NPCs can move, talk, and idle in scenarios like Harry Potter Town or perform role-specific…
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Source: Show HN post ↗ · launch text quoted in part
