Reversi Stone Shadow | HTML5 Game with AI and PvP

Game Modes

• VS AI – Three difficulty tiers (Easy / Medium / Hard)
• Two Players – Local play on one device (no online)

AI Difficulty

• Easy – Shallow depth + randomized moves
• Medium – Balanced depth + full heuristic scoring
• Hard – Maximum depth + corner-prioritized opening + tight alpha-beta cutoffs

Themes (8+ Custom)

• Obsidian / Crimson / Arctic / Amber / Violet / Neon / Sakura / Marble
• Custom Theme Builder – Live preview, 6 color pickers, preset themes (Forest, Ocean, Rose Gold, Slate, Sand, Jade)

Controls

• Click/Tap – Place disc
• Lobby – Return to main screen
• Pass – Skip turn

Overlay System

• Game Over / Pause / Assign Opponent / Quit Confirm
• Zero native popups – custom HTML overlays

Tech Stack

• HTML5 Canvas 2D
• CSS Custom Properties (theme tokens)
• Web Audio API (optional)
• requestAnimationFrame (60fps)
• ES2015+ JavaScript

Requirements

• Chrome / Firefox / Safari / Edge / Opera – (Latest)
• No build step – open index.html directly