I'll create a mobile-first Minesweeper app with multiple difficulty levels and a picoin reward system. The game will be fully responsive and optimized for touch interactions.

I've created a fully functional mobile Minesweeper app with the following features:

Key Features:

• Mobile-First Design: Optimized for touch interactions with appropriate button sizes
• Responsive Layout: Adapts to different screen sizes while maintaining playability
• Multiple Difficulties: Easy (9×9), Medium (16×16), and Hard (16×30) with different mine counts
• Picoin Rewards: Earn 10, 25, or 50 picoins based on difficulty level

• Touch Controls:

  • Tap to reveal cells
  • Long press to flag/unflag mines (mobile-friendly)
  • Right-click support for desktop users

Game Mechanics:

• Classic Minesweeper Logic: Proper mine placement and neighbor counting
• Auto-reveal: Empty cells automatically reveal adjacent cells
• Win/Lose Detection: Game ends when you hit a mine or reveal all safe cells
• Timer: Tracks your game time
• Flag Counter: Shows remaining flags available

Mobile Optimizations:

• Touch-friendly buttons: 32px (2rem) minimum touch targets
• Long-press flagging: Hold for 500ms to flag mines on mobile
• Responsive grid: Automatically scales based on difficulty
• Card-based layout: Clean, modern design that works well on mobile
• Gradient background: Visually appealing mobile interface

Additional Features:

• Persistent picoin counter: Tracks total earnings across games
• Game statistics: Shows mines remaining, time elapsed, and total picoins
• Result modal: Celebrates wins and shows rewards earned
• New game functionality: Easy restart with the same or different difficulty

The app is fully playable and includes all the classic Minesweeper mechanics while being optimized for mobile devices with a modern, clean interface.