Agent Sightings Real agent use cases

Race three models to build a Counter-Strike clone

Documented elsewhere: each model (Codex Max 5.1, Opus 4.5, Gemini 3 Pro) ran in its provider's CLI on a top-tier plan with default settings. They got about seven consecutive prompts. All three ended with a working multiplayer 3D shooter and no hand-written code.

Agent or tool
Codex
Topic
Productivity
Reported on
Hacker News
Added
2026-10-15

Why it matters

Small, repetitive tasks eat more of the week than anyone likes to admit. Cases like this show an agent taking a chore off someone's plate end to end, not just suggesting what to do. It is one of 196 sightings filed under Productivity on Agent Sightings (number 173 by interest), and one of 32 involving Codex.

How you could try it

Here is a reusable prompt, written by us in our own words, that captures the task. Paste it into Codex or any similar agent and adjust the details to your situation.

Help me race three models to build a Counter-Strike clone. Break it into steps, show your work, and wait for confirmation before anything irreversible, paid, or outbound.

Tip: Start small: run it once on a low-stakes example, read what the agent did, and only then let it run on real work.

Source

Read the original first-hand account on Hacker News: https://news.ycombinator.com/item?id=46080835. Our summary is a paraphrase; details are in the source.

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