What is Alien Defense 1?
Alien Defense 1 is a free shooting game with alien, defense and tower defense elements that you can play online in your web browser on Gameziko. It needs no download, no install and no account. Alien Defense - is a fun game where you can destroy the aliens by shooting at them with your gun.
How to play Alien Defense 1
- Press "Play now" on the game screen. Alien Defense 1 loads inside the player; some games take up to 20 seconds and may show a short ad first.
- Use your mouse only
- Use the full-screen button at the bottom right of the player for a bigger view, and press Esc to leave full screen.
Game details
| Category | Shooting |
|---|---|
| Tags | Alien, Defense, Tower Defense |
| Controls | Mouse |
| Screen | Landscape (800 × 600) |
| Price | Free |
| Download or sign-up | Not needed |
| Distributed by | GameMonetize |
| Added to Gameziko | 30 September 2026 |
Description from the developer
Alien Defense - is a fun game where you can destroy the aliens by shooting at them with your gun. Get a better highscore each time!
Alien Defense 1: frequently asked questions
Is Alien Defense 1 free to play?
Yes. Alien Defense 1 is free to play on Gameziko, with no download and no account needed. Like most free web games, it is funded by ads, so it may show a short ad before or between rounds.
What are the controls in Alien Defense 1?
The developer's instructions for Alien Defense 1 say: "Use your mouse only"
Can I play Alien Defense 1 on a phone or tablet?
Alien Defense 1 is an HTML5 game, so it opens in modern mobile browsers as well as on a computer. Its controls were designed mainly for a mouse, so a computer usually gives the smoothest experience.
What games are similar to Alien Defense 1?
If you like Alien Defense 1, try NOVAGUARD: Sky Defense, Zombi Defense and The Last Defense Z. They are shooting games with similar themes, and you can find more in the Shooting category on Gameziko.
Good to know
Alien Defense 1 is made by an independent developer and delivered by GameMonetize, so Gameziko cannot change the game or recover lost progress. Any progress the game saves is kept in your browser on this device. If the game does not start, wait up to 20 seconds, allow ads for gameziko.com and try again, or report the game.