"?? Game Overview
Number Puzzle is a classic sliding block game where you need to put numbered blocks in the correct order by sliding them into the empty spaces. The goal is to complete the following sequence in the least number of moves:
1-2-3
4-5-6
7-8-(empty)

?? Gameplay
Basic Rules
Goal: Arrange number blocks from 1 to 8, with the empty space in the lower right corner

Movement: Click on the block adjacent to the empty space to slide

Clearance Goal: Complete the level within the target number of steps

Level Progress: Challenge 15 levels of increasing difficulty step by step

Game Operation
Click: Move the block to the empty space

Restart: Reset the current level to the initial state

Next Level: Unlock and enter the next level after completing the current level

Visual Feedback System
?? Green Block: Moveable (adjacent to the empty space)

?? Purple Block: Immovable (not adjacent to the empty space)

?? Highlight Block: Temporarily highlighted when clicked

?? Step counter: displays the current number of moves and the target number of steps

?? Game Features
15 challenging levels
Beginner (5 steps) - Learn the basics

Easy (10 steps) - Simple layout to build confidence

Normal (15 steps) - Introducing more complex arrangements

Hard (20 steps) - Requires some strategic thinking

Expert (25 steps) - Advanced puzzle solving

Master (30 steps) - Master level challenge

Champion (35 steps) - Championship difficulty

Genius (40 steps) - Genius level puzzle

Legend (45 steps) - Legendary challenge

Prodigy (50 steps) - High difficulty layout

Artist (55 steps) - Precision solution challenge

Scholar (60 steps) - Scholar level skills

Wise (65 steps) - Extreme challenge

Grandmaster (70 steps) - Grandmaster difficulty

Ultimate (80 steps) - The ultimate level!

Intelligent visual design
Material Design 3: Modern, intuitive interface style

Dynamic color system: Clearly identify movable blocks

Smooth animation: Smooth transition and interactive experience

Gradient background: Beautiful visual style

Responsive layout: Adapt to different screen sizes

Game mechanics
Movement verification: Only legal moves are allowed

Progress tracking: Real-time step count display and goal prompts

Level reset: You can completely reset the current level

Achievement system: Complete all levels to get the title of "Puzzle Champion"

?? User interface
Main menu
Animated puzzle icon (spinning and pulsing effects)

Featured cards show game features

Extended floating button to launch the game

Gradient background and modern style design

Game interface
Top information card: display level information and steps

Puzzle area: beautify the block style

Action button: icon and animation effect

Real-time visual feedback: mark movable blocks

Victory screen
Victory celebration animation and effect

Show the number of steps and statistics of this level

Achievement card and progress prompt

Provide the option to return to the menu or enter the next level

?? Technical features
Performance optimization
Efficient block movement algorithm

Smooth 60fps animation

Memory optimization, smooth operation

Fast loading of level resources

Accessibility support
High contrast color scheme

Clear visual cues

Intuitive touch operation

Responsive design adapts to various devices

Cross-platform compatibility
Supports Android API 24 and above

Use Material Design component library

Adaptive layout

Use modern Android development features

?? Strategy Tips
Beginner Tips
Prioritize corners: locate corners 1, 3, 7, and 8 first
Plan ahead: think about the situation 2-3 steps later
Use hints: green hint blocks indicate that they can be moved
Don't be impatient: think calmly and find the best solution

Guide for advanced players
Identify patterns: master common block movement routines

Improve efficiency: try to complete within the remaining steps

Practice more: challenge levels repeatedly to increase speed

Challenge the limit: try to break your personal record"