Play Space Invaders online free and defend Earth from waves of alien attackers in this legendary arcade shooter. Rows of pixelated aliens march across the screen, dropping lower with each pass. You control a laser cannon at the bottom, dodging enemy fire while blasting invaders out of the sky. This faithful browser version captures the escalating tension that made Space Invaders an arcade sensation. As you destroy aliens, the remaining ones speed up, creating a heart-pounding final stretch when the last few invaders zip across the screen. With no downloads needed, you're just one click away from reliving the golden age of arcade gaming or experiencing it for the very first time.
How to Play Space Invaders
Use the left and right arrow keys (or A and D) to move your laser cannon along the bottom of the screen. Press Space to fire a shot upward at the descending alien formation. You can only have one shot on screen at a time, so make each one count.
The aliens move horizontally as a group, shifting down one row each time they reach the edge of the screen. They fire back at you randomly, so keep moving to avoid getting hit. Use the barrier shields for cover, but be aware they get chipped away by both enemy and your own fire. Clear all aliens to advance to the next, faster wave.
Space Invaders Tips & Strategies
- Focus on one side of the formation first — removing a column shortens the aliens' horizontal travel and slows their descent.
- Shoot from under the gaps in your shields so you have cover while firing.
- Take out the lowest aliens first to reduce the number of shots raining down on you.
- Watch for the bonus UFO that flies across the top of the screen — it's worth big points.
- Keep moving after every shot; a stationary cannon is an easy target.
- In later waves, prioritize survival over score — stay alive and the points will come.
Frequently Asked Questions
How do I get a high score in Space Invaders?
Focus on clearing waves quickly and always shoot the bonus UFO when it appears. The faster you clear a wave, the sooner you move to the next one, where point values are higher.
Why do the aliens speed up?
The fewer aliens remaining on screen, the faster they move. This is a classic design choice that makes the end of each wave the most intense part of the game.
Can I play Space Invaders on my phone?
Yes, the game supports touch controls with on-screen buttons for movement and firing. It plays well on both phones and tablets in landscape orientation.
