Alien Invasion is an exhilarating online game available for free at 4J.Com. As the earth faces a significant threat from alien forces, it's up to you to defend our planet against this extraterrestrial menace. The universe becomes your battleground, with hostile aliens attacking from multiple directions. Utilize your strategic skills and combat techniques to defeat waves of alien invaders. Assemble your arsenal and enhance your weapons to ensure you stand an even better chance against the relentless foes.

In Alien Invasion, players will encounter a variety of alien species, each with unique strengths and weaknesses. You'll need to adapt your strategies on the fly to outsmart your adversaries. Strategically placed barriers and power-ups can provide you the edge required to outlast the alien horde. As you progress through various levels, you will discover that teamwork and quick reflexes are essential to emerge victorious. Your goal is to dismantle their defenses while maximizing your firepower to protect earth from total annihilation.

Are you prepared to take on this unparalleled challenge? Rally your courage, gather your resources, and prepare for an intense battle in the skies as you fight to save your beloved planet from destruction. The fate of the earth hangs in the balance, and it is your determination that will tip the scales in this nail-biting interstellar confrontation.

How to play free Alien Invasion game online

To begin playing Alien Invasion, navigate your spacecraft using the arrow keys to dodge incoming attacks. Use the spacebar to shoot at the alien ships. Be sure to collect power-ups and bonuses that appear during the game to enhance your firepower and defenses. Stay alert, as the enemies will become more challenging as you advance!