🛸 SI Quiz — Space Invaders Quiz

A multiplayer trivia game with a Space Invaders-style arcade twist. Players join from their phones, answer questions by shooting the correct answer with their spaceship, and compete on a live leaderboard — all projected from the host's screen.

Built with FastAPI, WebSockets, SQLite, and Docker. No external services required.

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Features

• 🎮 Space Invaders mechanic — players shoot answers, not just tap buttons
• 📱 Mobile-friendly player view — join via QR code, no install needed
• 🖥️ Host panel — controls game flow, shows live answer count and ranking
• 🌐 Bilingual UI — English / Español toggle on the join screen
• 🎨 Theme switcher — Dark / Light / High Contrast (great for projection)
• 📊 Score history — persistent leaderboard across sessions
• 🏢 Department grouping — track scores by team
• ⚙️ Fully configurable — questions, org name, departments, time limit via JSON

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Quick Start

git clone https://github.com/carlitosbond/si-quiz.git
cd si-quiz

# 1. Edit your questions and branding
cp config.json config.json          # already provided, edit as needed
cp questions.json questions.json    # already provided, customize freely

# 2. Start
docker compose up -d

# Host panel: http://localhost:8000/host
# Players join: http://localhost:8000

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Configuration

config.json — branding and game settings

{
  "app_name": "SI Quiz",
  "app_subtitle": "Space Invaders Quiz",
  "org_name": "Your Team",
  "departments": ["Engineering", "Operations", "IT", "Sales", "Finance", "HR", "Other"],
  "time_limit_seconds": 15,
  "questions_file": "questions.json"
}

Field	Description
app_name	Displayed in browser title and UI headers
app_subtitle	Tagline shown on the join screen
org_name	Optional org/team name shown in the host panel
departments	List shown in the player join dropdown
time_limit_seconds	Seconds per question (default: 15)

questions.json — your question bank

Each question follows this format:

{
  "q": "Question text here?",
  "options": ["Answer A", "Answer B", "Answer C", "Answer D"],
  "correct": 0,
  "fun_fact": "Explanation shown after the answer is revealed."
}

• correct is the zero-based index of the correct answer (0 = A, 1 = B, 2 = C, 3 = D)
• Questions are shuffled each session
• No minimum or maximum — add as many as you want

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Scoring

Component	Points
Correct answer	200 pts base
Speed bonus	Up to +800 pts (scales with remaining time)
Wrong / no answer	0 pts
Max per question	1,000 pts

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Reverse Proxy (Caddy)

If you're running behind Caddy, do not add encode gzip — it breaks the WebSocket upgrade.

si-quiz.yourdomain.com {
    reverse_proxy si-quiz:8000
}

Connect the container to your Caddy network:

# In docker-compose.yml, under the si-quiz service:
networks:
  - si-quiz-net
  - web-net    # your Caddy shared network

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Environment Variables

Copy .env.example to .env to override defaults:

Variable	Default	Description
DB_PATH	/data/si-quiz.db	SQLite database path (inside container)
CONFIG_PATH	config.json	Path to config file
QUESTIONS_PATH	questions.json	Path to questions file

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Project Structure

si-quiz/
├── main.py            # FastAPI backend + WebSocket game logic
├── config.json        # Branding, departments, time limit
├── questions.json     # Your question bank
├── Dockerfile
├── docker-compose.yml
├── requirements.txt
├── .env.example
├── templates/
│   ├── player.html    # Mobile player view (Space Invaders game)
│   ├── host.html      # Host control panel
│   └── scores.html    # Score history viewer
└── static/            # CSS, JS assets (add music.mp3 here if desired)

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Background Music (optional)

The player view supports background music. Add a file named music.mp3 to the static/ folder — it will play automatically when a player joins and stop at the podium screen. Volume is set to 20%.

Music is not included in this repo. Bring your own royalty-free track.

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License

MIT — use it, fork it, adapt it for your team.