Defend the Galaxy: The Ultimate Space Arcade

Prepare for launch. We’ve combined the relentless descending grid of Space Invaders with the hyper-speed starfield of Galaga to bring you the ultimate retro space shooter on Puzzrs.

This isn’t just a web game—we’ve engineered it to run in an immersive, app-like Full-Screen Mode that automatically adapts to your device. Whether you are dodging alien lasers on your phone during a commute or blasting high scores on a desktop monitor, the galaxy is yours to save.

How to Play

Your mission is to eradicate the alien armada before they breach your defenses and reach the bottom of the screen.

• Desktop Controls: Use the Arrow Keys (Left and Right) to pilot your ship, and mash the Spacebar to fire your twin lasers.
• Mobile Controls: Simply Drag your finger across the screen to move. Your ship features an Auto-Fire System—as long as you are dragging your ship, you are shooting!

The Alien Armada: What to Expect

This game features dynamic difficulty scaling. The longer you survive, the harder it fights back.

• The Swarm Speeds Up: Every time you destroy an alien ship, the remaining fleet moves just a little bit faster.
• Leveling Up: Clear the entire grid to advance to the next wave. With each new level, the aliens start at a faster base speed and fire their purple plasma bolts more frequently.
• Chain Reactions: Look for clusters! Our custom physics engine features explosive particle effects—take out aliens quickly to clear paths through their laser fire.

Pro Survival Tip: Don’t just sit in the corners. The aliens drop closer to your ship every time they hit the edge of the screen. Stay central and punch a hole straight through their middle columns to buy yourself more breathing room.

The Global Leaderboard

Do you have the reflexes of an arcade champion? We track the Top 10 highest scores worldwide in real-time. When your ship finally goes down, enter your name to cement your legacy in the stars.