# How we built Agent of Somebody (slim) > Vlad Cealicu on how Agent of Somebody was built. About three hours of prompting Claude Fable 5.2 and changing his mind, a night of it working alone, the prompts as he typed them, what he asked to change after playing each build, what went wrong on both sides, and what a player on Reddit said about the text. - Full: https://www.anchorterminal.com/blog/how-we-built-agent-of-somebody.md (~2,700 tokens) · this version ~980 tokens · JSON https://www.anchorterminal.com/blog/how-we-built-agent-of-somebody.json · canonical https://www.anchorterminal.com/blog/how-we-built-agent-of-somebody - Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-11-11 - Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data) By Vlad Cealicu, 11 November 2026. 1,473 words, about 6 min to read. At eight minutes past one on Wednesday 11 November I sent a friend a message that said "ok i made a game, i lost at the first boss twice". ## What did I ask for? The first message asked for a different game (I've fixed my spelling in the quotes). Then I spent a while changing my mind. ## What came back? The first build I played had a camera that undid what the mouse had done, figures made of rigid pieces and a hero I called "a bit too robotic and meh". A lot of what I typed was a complaint with a typo in it. ## What does a night of it look like? Who did what, London time 1. **The night** (me). About three hours of prompts and changes of mind, then bed 2. **03:28** (fable 5.2). The first commit, and the pull request is opened 3. **03:59 to 08:22** (fable 5.2). Fourteen more commits, with the android hero and its motion capture, the voices, London's buildings and a score for each city 4. **09:23 to 09:31** (me). Three messages with a list of things to add 5. **11:04 to 12:06** (fable 5.2). Five commits that did the list 6. **13:06** (me). Merged, and live at 13:56 7. **13:57 onwards** (fable 5.2). Five more pull requests from what I asked for after playing it live The times are the commits' own [[2]](#ref-2). After it went live I asked for "a fox just going by and minding its business". ## What's in it? - 21: JavaScript files, and no libraries - 23,400: lines to the nearest hundred, with the page and its styles - 13 MB: the whole folder, with models, textures, skies and voices - 6: pull requests in one day The game on 11 November 2026, from the repository [2] The renderer is WebGL2 written by hand, and like the rest of the site it uses no libraries. ## Where did it go wrong? Some of it was me. Some of it was Fable. The text took somebody else to point out. It also used a lot. ## What isn't done Fable has only run the game in a headless browser with a software renderer, so it has never seen it on a real graphics card or heard it through a speaker, and the frame rate on phones isn't measured. The meta is what we're trying to use AI for, which is to fight disease, to fight bureaucracy and to get as much research done as possible, and that's what your agent fights. It went live at 13:56 and the message I sent my friend was "sorry got distracted playing it". --- More in [Inside Anchor Terminal](https://www.anchorterminal.com/blog/inside/index.md) · Previous [A machine that builds the benchmark](https://www.anchorterminal.com/blog/a-machine-that-builds-the-benchmark.md) - Older: [Qwen4-Max is in preview, and Alibaba's own docs still stop at Qwen3.8](https://www.anchorterminal.com/blog/qwen4-max-preview-docs-still-say-3-8.md) - All posts: https://www.anchorterminal.com/blog/index.md Anchor Terminal grades the tools AI agents run on, with a source for every score. ## References Read on 11 November 2026. My own messages are quoted with the spelling fixed. [1] My conversation with Claude Fable 5.2 in Claude Code, 11 November 2026, not published. [2] Anchor Terminal repository, 11 November 2026, not published. [3] Agent of Somebody, credits, 11 November 2026. Source for the Poly Haven scans, the MakeHuman base mesh, the CMU motion capture, the speech models behind the voices and their licences. [4] Reddit, r/accelerate, 11 November 2026. A reply to my post about the game.