Create README.md

Author: efrat-dev

games/mastermind/README.md

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+# 🎯 Mastermind Game (Bulls and Cows)
+
+Welcome to **Mastermind** — a logic-based code-breaking game where your mission is to guess the secret sequence of colors using deduction, logic, and a bit of luck!
+
+---
+
+## 🎮 Features
+
+- 👤 **Name Input**: Start by entering your name.
+- 🎚 **Difficulty Levels**:
+  - Easy
+  - Medium
+  - Hard
+  - Expert
+- ⏱️ **Live Timer** to challenge your speed.
+- 🏆 **High Score Viewer**: Check your current best results.
+- 🧾 **Rules Page** available for players unfamiliar with the game.
+- 🏠 **Home Button** with modal confirmation.
+
+---
+
+## 🧠 How to Play
+
+1. **Enter your name** in the input field.
+2. **Select a difficulty level** to begin the game.
+3. Try to guess the hidden color sequence by submitting guesses.
+4. Use the game’s feedback to refine your guesses:
+   - **Bull** (red): Correct color in correct position
+   - **Cow** (black): Correct color in wrong position
+5. Beat the clock and break the record!
+
+---
+
+## 🧪 Technologies Used
+
+- HTML5  
+- CSS3  
+- JavaScript (Vanilla)