---
name: opus-5-5-game-the-most-fun-game-in-the-world
description: "Use when you want a game like @coyane_ai's \"\"The most fun game in the world\"\". Runs their exact Claude Opus 5.5 prompt."
source: https://x.com/coyane_ai/status/2103668069801624015
prompt_source: https://x.com/coyane_ai/status/2103668069801624015
author: "coyane_ai (@coyane_ai)"
model: claude-opus-5-5
---

# "The most fun game in the world"

A free prompt from the Omo "Opus 5.5 game prompts" collection.

- Made by coyane_ai (@coyane_ai) and shared on X: https://x.com/coyane_ai/status/2103668069801624015
- Prompt quoted word for word from: https://x.com/coyane_ai/status/2103668069801624015
- Play the original: https://coyane-bloomkeeper.pages.dev/
- Model as stated by the creator: Claude Opus 5.5. Omo has not re-run it, so your result will differ.
- English translation of the prompt: Make the most fun game in the world with Koyane.

## How to use

1. Open Claude Code (or a Claude chat for a single-file HTML game) running Claude Opus 5.5.
2. Paste the prompt below.
3. Change the theme, characters or rules if you want your own version.
4. Play it, then ask for fixes in plain words.

## Prompt

```text
世界で一番おもしろいゲームをコヤネで作って
```

---
The prompt and the game belong to their creator. Listed on omo.space with credit and a link to the original.
Creator and want it removed? https://omo.space/support