Haunted Terminal

A ghost named Marlowe lives inside an old computer terminal, and he needs your help to finish his last story.

• Play it: https://haunted-terminal.vercel.app
• Demo video: https://youtu.be/K-CVyUl0Pvk
• Write-up: Haunted Terminal on DEV

Built for the DEV Hacktoberfest Week 4 Challenge, "Ghost in the Machine" (October 26 to 31, 2026).

What it is

A short, spooky, choose-your-path story told on a green-screen terminal. Marlowe was a writer who typed his stories on this machine until the power cut out mid-sentence one winter night. Now he speaks only by typing on the screen, in capitals.

Each turn, the open-weight Gemma model writes the next passage of the story, and you pick one of three choices or type your own action. After five choices you reach an ending that follows from what you did. Every passage can be read aloud by an ElevenLabs narrator.

Features

• Live, streamed story. Passages appear word by word as Gemma writes them, like Marlowe typing in real time.
• A real arc. About six passages: a mystery, the truth about Marlowe, a climax with three different endings, and a resolution.
• Narration. ElevenLabs text-to-speech, streamed so playback starts right away, with a speed control and an Auto-narrate option.
• Keyboard friendly. Press 1, 2 or 3 to choose, or type your own action.
• Handy controls. A "passage N of 6" counter, Try again for a failed turn, Restart at any point, and Copy story to save the finished tale.
• Accessible. Audited against WCAG 2.2 AA: focus moves to each new passage, screen readers hear the finished passage once instead of every streamed fragment, colors meet contrast, every control has a visible focus ring, and motion stops under prefers-reduced-motion.
• Spooky, never gory. PG fiction with no real-world tragedy.

Stack

• Next.js (App Router), plain JavaScript, no database. The story lives in the page; nothing is stored on a server.
• Story: Gemma 4 26B (gemma-4-26b-a4b-it), an open-weight model. Three ways to serve it, picked with GEMMA_MODE:
  • router: any OpenAI-compatible host, OpenRouter by default. Fastest, a few seconds to the first word. This is what the live site uses.
  • cloud: Google AI Studio, with thinking turned off.
  • local: Gemma in Ollama on your own machine.
• Narration: ElevenLabs text-to-speech. The default voice is Callum (N2lVS1w4EtoT3dr4eOWO); set ELEVENLABS_VOICE_ID to use another.
• Hosting: Vercel.

Run it locally

cp .env.local.example .env.local
npm install
npm run dev

Then open http://localhost:3000.

In .env.local, set GEMMA_MODE and the key it needs (ROUTER_API_KEY for router, GOOGLE_AI_STUDIO_KEY for cloud, nothing for local), plus ELEVENLABS_API_KEY for narration. Without keys the app still runs in demo mode with a canned story and tells you which key is missing. .env.local is gitignored, so keys are never committed.

Credit

The Gemma and ElevenLabs route code is adapted from my earlier project, Talk to the Book. Haunted Terminal is a new project built during the Week 4 window.