What is Galactic Missile Defense?
Galactic Missile Defense is a free strategy game with alien, defence and highscore elements that you can play online in your web browser on Gameziko. It needs no download, no install and no account. Galactic Missile Defense is a strategy tower defense ( TD ) game set in space, where you are in charge of 3 secret anti-missile technologically-advanced bases that are the last hope to save Earth.
How to play Galactic Missile Defense
- Press "Play now" on the game screen. Galactic Missile Defense loads inside the player; some games take up to 20 seconds and may show a short ad first.
- Tap on the screen to shoot towards a direction.
- You must destroy all visible aliens in order to advance to the next level and unlock more weapons, upgrades and aliens.
- For each upgrade, you can read the in-game instructions and you can upgrade all weapons for more effects, or even unlock new ones.
- 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 | Strategy |
|---|---|
| Tags | alien, defence, highscore |
| Controls | Touch (tap or swipe) |
| Screen | Landscape (1920 × 1080) |
| Price | Free |
| Download or sign-up | Not needed |
| Distributed by | GameDistribution |
| Added to Gameziko | 30 September 2026 |
Description from the developer
Galactic Missile Defense is a strategy tower defense ( TD ) game set in space, where you are in charge of 3 secret anti-missile technologically-advanced bases that are the last hope to save Earth. You can upgrade any anti-missile base with a variety of weapons and boosters but you must be careful as each choice requires strategy and skill. Be prepared for quick decisions as the action increases dramatically once you reach the higher levels!
Galactic Missile Defense: frequently asked questions
Is Galactic Missile Defense free to play?
Yes. Galactic Missile Defense 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 Galactic Missile Defense?
The developer's instructions for Galactic Missile Defense say: "Tap on the screen to shoot towards a direction. You must destroy all visible aliens in order to advance to the next level and unlock more weapons, upgrades and aliens. For each upgrade, you can read the in-game instructions and you can upgrade all weapons for more effects, or even unlock new ones."
Can I play Galactic Missile Defense on a phone or tablet?
Yes. Galactic Missile Defense supports touch controls, so it works in the browser on Android phones, iPhones and tablets as well as on a computer.
What games are similar to Galactic Missile Defense?
If you like Galactic Missile Defense, try Tower Defenders, Gold Miner Tower Defense and Cannons Blast 3D. They are strategy games with similar themes, and you can find more in the Strategy category on Gameziko.
Related guides
- Tower Defense Strategy: 10 Tips for Beginners: Ten tower defense tips for browser games: where to place towers, when to upgrade, mixing damage types, saving gold and handling boss waves.
Good to know
Galactic Missile Defense is made by an independent developer and delivered by GameDistribution, 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.