---
name: opus-5-5-game-ascii-crt-roguelike
description: "Use when you want a game like @kriptoleidi's \"ASCII CRT roguelike\". Runs their exact Claude Opus 5.5 prompt."
source: https://x.com/kriptoleidi/status/2105246199653482872
prompt_source: https://x.com/kriptoleidi/status/2105246199653482872
author: "kriptoleidi (@kriptoleidi)"
model: claude-opus-5-5
---

# ASCII CRT roguelike

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

- Made by kriptoleidi (@kriptoleidi) and shared on X: https://x.com/kriptoleidi/status/2105246199653482872
- Prompt quoted word for word from: https://x.com/kriptoleidi/status/2105246199653482872
- Model as stated by the creator: Claude Opus 5.5. Omo has not re-run it, so your result will differ.

## 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
Act as a lead game designer. Build a complete, turn-based ASCII roguelike in a single self-contained HTML/JS/CSS file with zero external dependencies.
1. Visual: 1980s CRT monitor, phosphor green text (#00FF66) on black, soft scanline glow.
2. Procedural generation: 40x22 map, connected rooms and corridors.
3. Entities: @ hero, # wall, . floor, g goblin (5 HP), $ gold, > stairs down.
4. Mechanics: turn-based movement and combat, track HP and gold.
5. HUD: floor number, HP bar, combat log. Permadeath with restart.
Output only the working HTML code.
```

---
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