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Online invasion Games
Square-Head Warrior Game

Plays: 3402
Category: Shooting Games
This square-head warrior has to protect his territory from the invasion of enemies. Please fight back to shoot down the intruders. Square-head can update his weapons or buy new weapons when he collects enough money by killing intruders. It's thrilling and fun. Enjoy!
Tank Invasion Game

Plays: 3395
Category: Strategy Games
Simple Tank TD game where you have maps to choose from and a selection of 8 tower to upgrade. There is a special ability in this game where enemy towers drop money so you can select the tank to pick up stuff and fight.
Cheese Queue Game

Plays: 3381
Category: Action Games
Free online arcade game from Hidden-Object-Online.com. Your goal is to defend the cheese from the invasion of hungry mice. Do not let the mice to steal your dinner. Toss the mouse to collect three or more mice of the same color to delete them. Also catch the bonuses.
Mario Sea War Game

Plays: 3378
Category: Puzzles Games
Mario is going to war with Bowser on the sea. Defense your castle against Bowser invasion. Send Bowser home using you super smart bomb to sink Browser navy.
destructive invasion Game

Plays: 3368
Category: Shooting Games
destroy as many alien blocks as possible
American Tank : Zombie Invasion Game

Plays: 3356
Category: Action Games
Zombies have plagued your city! Time to kill and destroy.
Smilies Invasion Game

Plays: 3348
Category: Action Games
Get into the fantastic world of Smilies Invasion and try to eat as much Green Smilies as you can! But warning, this game is Frenetic!
Guardian of Man Game

Plays: 3346
Category: Action Games
The earth has become inhospitable, so humans have created an Ark to travel through space and find a new home. You have been sent with a small contingent to scout ahead and find a suitable planet. Unfortunately, an alien invasion begins before the Ark gets there -- hold out from 30 waves and protect your new home!
Critter Attack Game

Plays: 3299
Category: Action Games
The invasion has begun, eliminate waves of aliens before they capture your world.
Lone Space Defender Game

Plays: 3292
Category: Shooting Games
Defend the earth from alien invasion. Many different upgradeable skills. Defend against 10 levels of enemies. Each levels has boss or bosses.
Mechanical Commando Burning Skies Game

Plays: 3289
Category: Action Games
Mc2: Burning skies is the sequel of the popular Mechanical Commando 2 who have been played by over 8 million time around the web. Build and customize your own space fighter in this top down bullet hell. Play as Katia, the resistance pilot seen in Mc2 invasion.
mathman2 Game

Plays: 3276
Category: Action Games
The only way to figt an invasion of monsters is to solve simple math equation. You have to strike at the sensitive point - correct result of equation. Avoid false results.
Gamma Defender Game

Plays: 3273
Category: Puzzles Games
Defend your planet from an alien invasion. Use your keyboard to destroy all the bombs!
Invasion of the Planet Snackers Game

Plays: 3267
Category: Shooting Games
Defend your planet from the Planet Snackers in this game of fast-firing lasers! Prevent the digestion of our very own Earth.
Mouse Chain Game

Plays: 3208
Category: Action Games
New free online colorful game in Zuma style from ArcadeGamePlace.com. Your goal is to defend the food reserves in the cellar from the invasion of hungry mice. In spite of the cheese was hidden thoroughly the rodents managed to make a tunnel just to the object. Do not let the mice to spoil your supper! Toss the mouse to collect three or more mice of the same color to delete them. Also catch the bonuses that help you to hold the line more effectively.
Invasion To Earth Game

Plays: 3193
Category: Action Games
Aliens in Planet Mars were attacked by Humans. You must help three little green aliens to complete their revenge missions by invading earth to steal Human's nuclear rockets, to rescue all captured aliens and other amazing missions.
Alien Paroxysm Game

Plays: 3163
Category: Action Games
The mission to supply the friendly outpot went terribly wrong once it turned out to be captured by angry aliens.. Crashlanded on a planet, without food / radio there is no other option then to go inside the doomed towers..
Phase TD Game

Plays: 3132
Category: Action Games
Alien life forms have been detected near your planet. Your army has mobilized its defensive tower forces to protect your homeworld. Stop the invasion before the enemy reaches your cities!
Matriarch Game

Plays: 3121
Category: Action Games
Defend your invasion forces from attacking ships while they retake solar systems from a malicious computer virus. Use your special vessel, the Nautilus, to manufacture ships to assist you in the battle. Upgrade your stations with addons as you progress, and discover new more powerful ships to help you defeat the enemy.
Giant Walking Eye Game

Plays: 3115
Category: Action Games
Invade the Earth. Upgrade your walkers. Destroy humanity. This distance runner puts you in a an alien eyebot strider through 25 of the world's major cities. Use your lasers and missiles to fend off the human's pathetic attacks as your claw harvests their flesh for the good of the alien species. As you pick up speed, you'll gain a powerful shield, protecting you from tanks, bazookas, and helicopters.

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Tips: Setting the opponent movement speed to zero can give you a platform for you to do your own animation instead the opponent graphic. You could make an opponent popup and then hide again using animation instead of the built in movement.