Spear-fishing island game

A simulator game なちゃっと built with Claude Opus 5.5. Copy the exact prompt free.

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by なちゃっと (@nachat_dayo)FreeOpus 5.5 game prompts

@nachat_dayo built this with Claude Opus 5.5 and shared the full prompt on X; it is quoted below word for word. Opus5.5でモリ突きゲームを作ってみました。 1回のプロンプトでほぼ完成して、あとはバグや微調整をしただけです。3000円プランの16%を消費。 実際にプレイできます。 The original post had 117K views. English translation: “This is a project to make a new game to test Opus 5.5. There is nothing here yet. It is a 3D browser game about spear fishing underwater, like catching fish with a spear on a deserted island in a survival TV show. Turn that into a game. I don't mind the library, but I expect Three.js; you don't have to use it. This PC also has the Codex CLI, so you may use it for image generation if needed. Decide the details yourself. Above all, surprise me with a game that is fun and has great graphics. Not the usual thing that looks right but has a weak UI or merely moves: pay attention to quality.”

The prompt

これはopus5.5の性能を見るために新しくゲームを作るプロジェクトです。まだ何もありません。
内容はブラウザで出来る3Dゲームです。
内容は海中でモリ突きをするゲームです。黄金伝説0円生活の無人島でモリで魚をとるイメージです。それをゲーム化してください。
ライブラリはこだわりませんが、Three.jsを想定しています。使わなくてもいいですが、このPCにはCodexのCLIもありますので、Image生成などで必要があればそれを使ってもいいです。
細部はあなたがいい感じに考えて使ってください。とにかくゲームとして面白い、グラフィックも優れているものを作って私を驚かせてください。よくあるそれっぽいけど、UIがいまいちだったり、動くだけだったりするのではなく、クオリティに気をつけてください。

Prompt by なちゃっと (@nachat_dayo), quoted word for word from the original post. Model as stated by the creator; your result will differ.

What’s inside

  1. Copy the prompt below, or download it as a SKILL.md
  2. Paste it into Claude Opus 5.5, ideally in Claude Code so it can write, run and test the game
  3. Swap in your own theme, characters or rules where the prompt names theirs
  4. Play it, then ask for fixes and polish in plain words

What you’ll bring

  • Claude Opus 5.5 (Claude Code, or a Claude chat for single-file HTML games)
  • A browser to play the result
  • Your own twist on the idea, if you want one

What you’ll get

  • A playable browser game in the spirit of the one above, written by Claude
  • The code, which you can keep editing

Perfect for

  • Anyone who wants to make a game without coding
  • Developers testing what Opus 5.5 can build
  • Teachers and parents making a game with kids

Also found as

opus 5.5 game prompt · claude game prompt · one shot game prompt · simulator · spear-fishing island game

Questions

What is Spear-fishing island game?

Spear-fishing island game is a simulator game that なちゃっと (@nachat_dayo) built with Claude Opus 5.5. This page quotes the prompt they shared, word for word.

Who made it, and where was the prompt shared?

なちゃっと (@nachat_dayo) made it and shared the prompt on X: https://x.com/nachat_dayo/status/2102773498037023140. You can find more from them at https://x.com/nachat_dayo.

How do I use the prompt?

1. Copy the prompt below, or download it as a SKILL.md. 2. Paste it into Claude Opus 5.5, ideally in Claude Code so it can write, run and test the game. 3. Swap in your own theme, characters or rules where the prompt names theirs. 4. Play it, then ask for fixes and polish in plain words.

Is it free?

Yes. Copying the prompt and downloading the SKILL.md costs nothing on Omo. You run it with your own access to Claude Opus 5.5.

The video and the prompt belong to なちゃっと. Omo lists them free, with credit and a link to the original post. Creators can ask us to remove a listing at omo.space/support.