---
name: opus-5-5-game-guinea-pig-mario-1-1
description: "Use when you want a game like @sakiyamaK's \"Guinea-pig Mario 1-1\". Runs their exact Claude Opus 5.5 prompt."
source: https://x.com/sakiyamaK/status/2102540480009617839
prompt_source: https://x.com/sakiyamaK/status/2102540480009617839
author: "崎山圭@iOSアプリエンジニアで工学博士で専門学校の講師をしてた (@sakiyamaK)"
model: claude-opus-5-5
---

# Guinea-pig Mario 1-1

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

- Made by 崎山圭@iOSアプリエンジニアで工学博士で専門学校の講師をしてた (@sakiyamaK) and shared on X: https://x.com/sakiyamaK/status/2102540480009617839
- Prompt quoted word for word from: https://x.com/sakiyamaK/status/2102540480009617839
- 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: Take Mario 1-1, make the player a guinea pig, and replace the enemies with original ones.

## 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
マリオ1-1でプレイヤをモルモットにして敵もオリジナルに変えて
```

---
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