---
name: opus-5-5-90s-demoscene-demo-in-c-and-opengl
description: "Use when you want a video like @gandamu_ml's \"90s-style demoscene demo in C/OpenGL\". Runs their exact Claude Opus 5.5 prompt."
source: https://x.com/gandamu_ml/status/2102919394775220530
prompt_source: https://x.com/gandamu_ml/status/2102920889767485554
author: "gandamu (@gandamu_ml)"
model: claude-opus-5-5
---

# 90s Demoscene Demo in C and OpenGL

A free prompt from the Omo "Opus 5.5 videos" collection.

- Made by gandamu (@gandamu_ml) and shared on X: https://x.com/gandamu_ml/status/2102919394775220530
- Prompt quoted word for word from their reply: https://x.com/gandamu_ml/status/2102920889767485554
- Model as stated by the creator: Claude Opus 5.5. Omo has not re-run it, so your result will differ.
- Tools the creator mentioned: none (rendered in code)
- Needs your own files: yes, the prompt refers to images, video or audio you supply

## How to use

1. Open Claude Code (or another agent running Claude Opus 5.5 that can write and run code).
2. Paste the prompt below.
3. Replace the creator's product, brand or topic with yours.
4. Let it render, then ask for changes in plain words.

## Prompt

```text
I would like you to create a kickass, impressive 1990s style demoscene demo using this S3M track as the music. Prior to getting to work, please see how to best play and analyze the S3M track. This will be important since synchronization of effects and appropriateness of scenes to the musical vibe (and this song does have a variety of sections with different attitude) is essential to a great demoscene demo. Also prior to getting started, please research what kinds of effects, physics, etc. would be good to use in combination. Please use C/C++ -- with appropriate demoscene/embedded/console gamedev sensibilities to avoid needlessly bloating compile times -- with OpenGL. In some cases, blitting to surfaces in realtime may be appropriate.. while in others, using OpenGL or even shaders is appropriate as well. It should be planned and polished to be spectacular and shocking. This is Claude's way of really showing off to the world that it kicks ass.
```

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