Ghost in the Machine: Summoning Cyber-Horrors with Open-Source AI (Google Gemma & Meta Llama) - Pumpkin Lover Edition

This is a submission for the Hacktoberfest Open-Source AI Challenge Week 4: Ghost in the Machine

What I Built

For Halloween 2026, I built Ghost in the Machine (Pumpkin Lover Edition) — an atmospheric, cyber-gothic haunted terminal that summons eerie 2-to-3 sentence micro-horror stories directly from possessed open-source neural weights.

As an avid pumpkin lover, I infused this challenge with my own creative signature: blending retro computing lore, haunted smart-farm folklore, and chilling Jack-o'-lantern tales.

Key Features:

• ⚡ Open-Source AI Inference: Seamlessly summons creative micro-stories powered by Google Gemma 2 (9B) and Meta Llama 3.1 (8B) via sub-second Groq inference.
• 🎃 Pumpkin Lover Signature Lore: Unique folklore including 3:14 AM pumpkin soup apparitions, immortal blood-drinking gourds, and IoT pumpkin patch root breaches.
• 📻 Procedural Web Audio Synth Jukebox: Real-time in-browser music synthesizer recreating John Carpenter's 1978 Halloween theme, a D-minor Cursed Music Box, and Catacomb Pipe Organ (0kb external audio files!).
• 🖥️ Instant Reactive Terminal: Authentic CRT scanlines, screen curvature vignette, typewriter text effect, and 4 dynamic theme color shifts (Pumpkin Orange, Cyber Green, Blood Red, Singularity Purple).
• 🕯️ Offline Zero-Internet Resilience: 100% functional when the lights and internet go out on Halloween night via an onboard curated engine.

Demo

• 🌐 Live Demo: https://ghost-in-the-machine-mu.vercel.app
• 🏷️ Custom Domain: xuannhj.tech (Powered by .TECH Domains on Vercel)

(Tip: Click "🎃 PHÁT NHẠC HALLOWEEN" right above the terminal to hear the live procedural synthesizer while summoning stories!)

Code

• GitHub Repository: https://github.com/xuannhj/ghost-in-the-machine

How I Built It

1. Open-Source AI Models:
   • Google Gemma 2 (9B) & Meta Llama 3.1 (8B) for sharp, terrifying micro-prose.
   • Built-in fallback engine ensuring the app is never broken by rate limits or lack of an API key.
2. Frontend Architecture: React 19, Vite, and Tailwind CSS v4 for sub-second builds.
3. Web Audio Synthesis: Custom oscillators and biquad filters producing polyphonic horror drones, 5/4 Carpenter arpeggios, and speech synthesis voice narration.
4. Bento Grid Architecture: Responsive modern showcase highlighting the open innovation principles behind the build.

Why Does Open Innovation Matter?

Open innovation is why this project could be built in a single afternoon without friction:

• Works with the Lights & Internet Off: Closed models lock you behind payment walls and servers that fail during power outages. Open-weight architectures empower software that runs anywhere, anytime, completely offline.
• Privacy & Sovereignty: Personal reflections and creative folklore remain strictly on the client, never harvested for ad tracking.
• Zero Cost & Creative Freedom: Empowers students and independent creators worldwide to build rich AI experiences without a credit card.

The Spirit of It

The moment that gave me chills was watching the typewriter effect slowly spell out a story generated in a dark room with the synthesized Carpenter theme humming through my headphones:

"As a certified pumpkin lover, I simmered a pot of spiced pumpkin soup before bed. At 3:14 AM, the lid clattered open on its own, and the pumpkin chunks arranged into a grinning Jack-o'-lantern that hissed: 'You have devoured our kind for years... tonight, we feast on you.'"

Hearing the deep pitched cursed voice read those words made the "Ghost in the Machine" truly come alive.

Prize Categories

• Best Use of a .tech Domain: Registered and built for xuannhj.tech (deployed on Vercel Edge Network).