How to Play
Pilot your UFO using your mouse or arrow keys to navigate the arena. Your objective depends on the mode: in Classic, grow your ship to become the largest; in Solo, consume the entire city; in Battle, eliminate all opponents to be the last UFO standing. Collect boosters and smaller alien ships to increase your power.
Mouse / Tap
Keyboard
Tips & Tricks
- Prioritize collecting treasure chests early to gain a size advantage over slower opponents.
- Use the magnetic field booster to quickly gather scattered pickups without changing direction.
- In Battle mode, avoid larger UFOs initially and hunt weaker players to build your fleet.
- Pay attention to opponent positions on the map and use corners to ambush overconfident invaders.
- Save your size-up booster for critical moments when you need a quick power spike to escape danger.
Frequently Asked Questions
Is Alien Invaders.io really free to play?
Yes, Alien Invaders.io is completely free to play in your browser with no downloads required. You can jump into matches instantly.
Can I play Alien Invaders.io on my mobile device?
Yes, Alien Invaders.io works on mobile browsers. Use touch controls to steer your UFO and play on the go.
What's the difference between the three game modes?
Classic mode focuses on becoming the biggest ship, Solo mode tasks you with consuming an entire city, and Battle mode is a last-alien-standing competition against other players.
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