Alien Invasion

Alien Invasion is an exciting free online game on 4J.Com where Earth is under attack from dangerous alien forces. Your mission is to protect the planet by battling waves of enemies coming from every direction. Use smart tactics, quick reactions, and upgraded weapons to survive each stage. Different alien types bring their own strengths and weaknesses, so you must adjust your strategy as you move forward. Barriers and power-ups can help you endure longer and strike harder. Stay focused, fight bravely, and stop the alien invasion before Earth is destroyed.

How to play free Alien Invasion game online

Control your spaceship with the arrow keys to avoid enemy fire, and press the spacebar to shoot alien ships. Pick up power-ups and bonuses to improve your attack and defense. As the game continues, the enemies become tougher, so stay alert and keep moving to win.