Space Invaders Game

A classic Space Invaders game built with HTML5 Canvas and Node.js.

Features

• Progressive Difficulty: Levels get progressively harder with more enemies and faster gameplay
• Pause Functionality: Press P or click the Pause button to pause and resume the game
• Score Tracking: Earn points for each enemy destroyed (points increase per level)
• Lives System: Start with 3 lives, lose a life when hit by enemy fire
• Visual Effects: Explosions and particles on enemy destruction
• Responsive Design: Works on desktop browsers
• High Performance: Optimized canvas rendering with smooth 60 FPS gameplay

Requirements

• Node.js 22.x LTS (Latest)
• npm

Installation

1. Navigate to the project directory:

cd "Space Invaders"

2. Install dependencies:

npm install

Running the Game

Start the server:

npm start

Then open your browser and visit:

http://localhost:3000

Controls

• Arrow Keys: Move left and right
• Spacebar: Shoot
• P Key: Pause/Resume
• Pause Button: Pause/Resume (UI button)
• Restart Button: Start a new game

Game Mechanics

Levels

• Each level spawns more enemies than the previous one
• Enemy speed increases per level
• Enemy fire rate increases per level
• Clear all enemies to advance to the next level

Scoring

• Base points: 10 points per enemy destroyed
• Points increase with level multiplier (Level 1 = 10pts, Level 2 = 20pts, etc.)

Game Over Conditions

• Lose all 3 lives
• Enemies reach the bottom of the screen

Project Structure

Space Invaders/
├── server.js          # Express server
├── package.json       # Project dependencies
├── public/
│   ├── index.html     # Game HTML
│   ├── game.js        # Game logic
│   └── styles.css     # Game styling
└── README.md          # This file

Browser Compatibility

Works best in modern browsers with HTML5 Canvas support:

• Chrome
• Firefox
• Safari
• Edge

License

MIT