# Cards JD

> Play classic card games online and offline

## About

Cards JD (cardsjd.com) is a comprehensive card games platform offering free online and offline card games including Speed, Spades, Nertz, Solitaire, Cribbage, Hearts, Gin Rummy, and Minesweeper. The platform supports both single-player and multiplayer gameplay, with games available across web browsers, iOS, Android, and Windows platforms.

## Key Games

### Cribbage
- URL: /cribbage/
- A classic two-player card game involving strategy and counting
- Features: How to play guides, scorecard, service worker for offline play
- Additional resources:
  - /cribbage-calculator/ - Interactive cribbage hand scoring calculator
  - /cribbage-strategy/ - Comprehensive strategy guides and tutorials

### Speed
- URL: /speed/
- Fast-paced card game where players race to get rid of their cards
- Features: How to play guide, gameplay videos

### Solitaire
- URL: /solitaire/
- Classic single-player card game
- Multiple implementation versions available (game/, gameasm/, gamejs/)

### Spades
- URL: /spades/
- Popular trick-taking card game for four players
- Team-based gameplay with bidding mechanics

### Hearts
- URL: /hearts/
- Trick-avoidance card game
- Goal: Avoid taking hearts and the Queen of Spades

### Gin Rummy
- URL: /ginrummy/
- Two-player matching card game
- Form sets and runs to win

### Nertz
- URL: /nertz/
- Fast-paced competitive solitaire for multiple players
- Also available as: /nertz-app/ (app version)

### Minesweeper
- URL: /minesweeper/
- Classic puzzle game (bonus non-card game)

## Cribbage Strategy Resources

The site features extensive educational content for cribbage players:

- /cribbage-strategy/howdoicountmyhandincribbage.html - Hand counting tutorial
- /cribbage-strategy/quickcountingcribbage.html - Quick counting techniques (Parts 1-3)
- /cribbage-strategy/jacksincribbage.html - Understanding jacks in cribbage
- /cribbage-strategy/howmanydifferenthandsarethereincribbage.html - Hand probability analysis
- /cribbage-strategy/chancesofgettingcertainscoreincribbage.html - Score probability guide

## Additional Features

- Tournament system: /tournament/

## Platform Support

- **Web**: Browser-based games accessible via cardsjd.com
- **Mobile**: iOS and Android native apps available
- **Desktop**: Windows applications
- **Offline**: Service workers enable offline gameplay

## Technical Details

- PWA-enabled games with manifest.json files
- Service workers for caching and offline support
- Responsive design for all screen sizes
- Configuration files for cross-game navigation

## Company

- Developer: JD Software LLC
- Content Policy: Family-friendly games suitable for ages 3+
- Genre: Casual, Card Games, Puzzle, Classic

## Site Structure

- Main landing page: /index.html
- Individual game directories with self-contained assets
- Shared CSS and images in /css/ and /images/
- robots.txt and sitemap.txt for SEO
- ads.txt and app-ads.txt for advertising