Defend the Planet

Aim true and blast incoming alien waves before they crack your homeworld's shields in this fast-paced orbital defense shooter.

You're the last gun between a hostile swarm and the blue marble spinning below. The mouse does everything: whip it around to spin your turret, click to fire. It sounds simple, and it is—until three enemies come from opposite quadrants and you realize you can't shoot two directions at once. I died early on because I kept chasing fast movers while a slow, chunky brawler drifted in behind me. Lesson learned: space is a chessboard, not a shooting gallery. Each wave throws a mix of enemies at you. Small scouts zip along the edges, medium drones drift straight in, and heavier brutes soak up damage while slower but deadlier. Your shots have visible travel time, so you'll need to lead targets—especially the ones that juke sideways. The planet's shield ring is your last line; once it starts flashing red, you're in panic mode. I found a rhythm of wide circling and controlled bursts worked better than frantic clicking. There's a satisfying kick when a shot lands dead center and the alien pops into a burst of pixels. What kept me coming back is how the game punishes greed. You can't just hold down the trigger; you'll overheat or miss too much and get swarmed. It forces you to read the field, decide which threat gets the next shot, and commit. No upgrades, no story, no mercy—just you, a turret, and a planet that's counting on you. If you like arcade shooters where positioning matters as much as aim, this one scratches that itch hard.

Please use the mouse to turn the direction and the left mouse button to attack!

Lead your shots slightly—enemies won't wait for your bullets to arrive. Keep your turret moving in a slow circle so nothing sneaks up behind you. Focus the chunky slow enemies first; they hit the planet harder if they get close. Don't spam click. Short, aimed bursts keep your accuracy high and your screen clear. Watch the shield ring around the planet. If it flashes, clear that side immediately.

Q: Is Defend the Planet free to play? A: Yes, it's completely free and runs right in your browser. Q: Do I need to download anything to play? A: No downloads needed. It's an HTML5 game that loads instantly. Q: Can I play Defend the Planet on mobile? A: It's designed for mouse controls, but your mobile browser can still open it. Q: How do I aim and shoot in Defend the Planet? A: Move the mouse to rotate your turret, then press the left mouse button to fire. Q: Is Defend the Planet unblocked at school? A: Many schools allow this unblocked version, but filters vary by network. Q: What kind of enemies attack the planet? A: Alien drones, scouts, and heavy brutes attack in waves from all directions.