What is alien defence?
alien defence is a free adventure game that you can play online in your web browser on Gameziko. It needs no download, no install and no account. Defense - Alien war TD is the fight against the invasion of alien creatures.
How to play alien defence
- Press "Play now" on the game screen. alien defence loads inside the player; some games take up to 20 seconds and may show a short ad first.
- mouse
- 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 | Adventure |
|---|---|
| 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
Defense - Alien war TD is the fight against the invasion of alien creatures. The stunning graphics and flexible tactics bring enjoyable experiences for defense game enthusiasts. In 2850, moving between galaxies in the universe becomes easier. Creatures come from distant galaxies and are looking for energy from organic matter. With remarkable evolution, they can transform all organic matter into energy for their survival. They destroyed everyone they encountered in their path. In this situation, all men have come together to fight against these creatures. Men have established, developed new weapons to prevent the reproduction of these alien creatures.
alien defence: frequently asked questions
Is alien defence free to play?
Yes. alien defence 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 defence?
The developer's instructions for alien defence say: "mouse"
Can I play alien defence on a phone or tablet?
alien defence 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 defence?
If you like alien defence, try URBAN JUMP, Dino Hunter: Jurassic Hunt and Balloon Pop: Pop & Blast. They are adventure games with similar themes, and you can find more in the Adventure category on Gameziko.
Good to know
alien defence 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.