How to Play Alien Invaders

Defend Earth from descending alien invaders in this classic shooter. Here's everything you need to know to start playing.

Step-by-Step Guide

Alien Invaders loads instantly in your browser — no downloads required.

Read the controls: ← → to move, Space to fire. On mobile, tap and swipe directly in the game area.

The goal is simple: Defend Earth from descending alien invaders in this classic shooter.

Choose your difficulty and start playing!

Track your best score — it saves automatically in your browser.

Use the toolbar to pause, restart, adjust difficulty, toggle sound, or go fullscreen.

Jump into Alien Invaders now and put these tips to the test!