---
title: "Infinity Arcade — Brad Jasper"
description: "Play any game you can think of as a text adventure, with a language model as the game engine."
url: https://bradjasper.com/projects/infinity-arcade/
---

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# Infinity Arcade

Live · 2023 · Web · AI

Play any game you can think of as a text adventure, with a language model as the game engine.

- [infinityarcade.com](https://infinityarcade.com/)

![A grid of AI-generated cover art for Infinity Arcade games](https://bradjasper.com/_astro/infinityarcade.DPZhSSNQ_QBqT0.webp)

Infinity Arcade started with a question to my 11-year-old nephew: do you want to make a game? In seconds we were playing Link and Mario against Bowser in ChatGPT, with hit points draining and spells being cast. A good enough language model could be the game engine.

I built Infinity Arcade in April 2023 to try that with any game. You describe an idea, and a model writes the title, genre, description and tagline, plus a prompt for the cover art. Then it plays the game with you one turn at a time: a short scene, four choices, and whatever state the story needs to keep track of.

The trade-offs showed up early. GPT-4 ran the best games but was slow and rationed; GPT-3.5 was fast but sometimes made up the game state; and the closed models refused some game moves, like gambling the company’s money on crypto. I wrote it up in [Infinity Arcade and Sparks of Generative Video Games](https://bradjasper.com/blog/sparks-of-generative-video-games/).

## Writing

- [Infinity Arcade and Sparks of Generative Video Games](https://bradjasper.com/blog/sparks-of-generative-video-games/) · April 2023

[![Startup Tycoon in Infinity Arcade: a scene about a $500k offer, four numbered choices and cover art of a city skyline](https://bradjasper.com/_astro/infinity-arcade-startup-tycoon.De0WdTj7_ZpaFWg.webp)](https://bradjasper.com/_astro/infinity-arcade-startup-tycoon.De0WdTj7_ZpaFWg.webp)

Startup Tycoon, 2023: each turn is a short scene and four choices.

[![The Boom Town game page: title, tagline, description and a Play button beside cover art of a busy city street](https://bradjasper.com/_astro/boomtown.Da0P1SA2_nIkKP.webp)](https://bradjasper.com/_astro/boomtown.Da0P1SA2_nIkKP.webp)

Boom Town: the model wrote the title, tagline and description, and the prompt for the art.

[![The Night the Light Went Out game page, a survival game after an EMP, with cover art of a dark city skyline](https://bradjasper.com/_astro/thenightthelightwentout.2ALdMbwo_pu2gG.webp)](https://bradjasper.com/_astro/thenightthelightwentout.2ALdMbwo_pu2gG.webp)

The Night the Light Went Out, a survival game.

[![The Infinity Arcade home page: a grid of games, each with cover art, genre and a one-line tagline](https://bradjasper.com/_astro/infinity-arcade-screenshot-home.yp3RQ9wu_2uXSpd.webp)](https://bradjasper.com/_astro/infinity-arcade-screenshot-home.yp3RQ9wu_2uXSpd.webp)

The catalog of games on infinityarcade.com today.