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Online Alien Games
Mars Colonizer Game

Plays: 2681
Category: Action Games
Mars Colonizer is a small strategy game in space. The objective of the game is to capture the entire planet Mars by defeating your alien neighbours. Upgrade and use your spaceships to break down their resistance, once the resistance is low you can land on the surface to challenge the boss. Defeat all your enemies and rule over Mars.
Baby vs Alien Game

Plays: 2680
Category: Action Games
baby vs alien games, save the universe from the alien
Project Mayhem 2 Game

Plays: 2678
Category: Action Games
You are a secret agent ordered by the government to steal yet again another alien object from the secret military base area 51, Take the alien weapon device and use it to escape! Good luck! Build your own game like this on Pulado.com! Build Your Own Games
Frontline Game

Plays: 2678
Category: Action Games
An alien civilization has invaded our planet. You have to resist enemy robots by controlling mechanical android. Destroy enemies, earn points and upgrade your robot. Explore 12 distinct cities where you can destroy cars, confront a horde of enemies and enjoy great music.
Kalien - Back To School Game

Plays: 2673
Category: Action Games
You control an alien called Kalian. Move him around the mouse and dodge the classroom objects, well maybe not all of them are classroom objects. Gain upgrades to make your alien smaller, bigger, more health, more enemies, rotation, extra points, and the most secret bonus, the computer.
Twox Game

Plays: 2662
Category: Action Games
In this free online flash game you have to safe the twox creatures that are beamed down from the mothership while hostile aliens are trying to attack you.
Blast! Game

Plays: 2662
Category: Action Games
Blast through waves of enemies and destroy the alien boss! A fast-paced space shooter with various alien formations and a massive boss enemy. Your spaceship's rate of fire is upgraded automatically after completing a stage.
Alien Invasion Game

Plays: 2662
Category: Action Games
Fun
Tales of the Demon Lords: Picardon's Galactic Campaign Game

Plays: 2657
Category: Action Games
The alien Picardon, the Demon Lord from planet Zorlos has started a campaign to take over the sixteen galaxies. It is up to you, a young starfighter named Lianmous to stop him. Special thanks to Loose Leaf for the awesome sprite generator I used to make the two sprites in the opening scene and Stencyl for the amazing game making program.
Age of Defense Mini Game

Plays: 2650
Category: Action Games
The mini soldiers are ready to the action! Battle through 32 units, unlock 32 unique skills, use tree-based upgrade system and beat over 100 levels!
2013 Invasion Game

Plays: 2645
Category: Action Games
This is UFO shooter game. UFO flying in space and palyer can shoot them for win. Be carefull with the time
Alien Kill Game

Plays: 2644
Category: Action Games
Alien Kill Choose your character and kill aliens.
Retro Attack Game

Plays: 2633
Category: Action Games
Fourty levels of non-stop classic retro arcade action! The game has an arcing storyline where you start out mining in an asteroid field, discover the alien attack, make a fighting retreat back towards Earth only to have it destroyed out from under you. From there you must seek to avenge your destroyed planet on the alien scum!
Alien Avenger Game

Plays: 2632
Category: Action Games
The war against Aliens have begun. Help Army Man Rob destroy the aliens before they take over out planet! You have two guns to choose from.
Maya vs Aliens Game

Plays: 2629
Category: Shooting Games
Defend the city of Maya from aliens. Place cannons along road on which aliens move. Do not give any of them to get in city
Fist Pumpin Game

Plays: 2626
Category: Action Games
While walking home from the nightclub, Louie finds the city taken over by aliens! Help Louie defeat the alien party crashers! Hop on enemies and combo for the win! Build your own games like this on Pulado.com! Make Your Own Games.
Mountains Find the Alphabets Game

Plays: 2614
Category: Puzzles Games
Analyze your power of observation by finding out the numbers. For each accurate click, score will get increased and for wrong click, score will get reduced.
OPERATION SW23 Game

Plays: 2612
Category: Action Games
The war for survival has begun. The human race is threatened. Your mission is to repel the alien forces and defeat the bosses of each level! Another retro game by http://www.video-giochi.org
Comet Busters! Game

Plays: 2610
Category: Action Games
More awesome games at http://gamelash.tk
77 Islands Game

Plays: 2607
Category: Action Games
It is a kind of a multidimensional game, where you play games inside the game to achieve the final goal. It is a board game and also a shooter. Your final target is to get to the last island through many others. There are 77 islands in total. You may get there with the minimum moves and minimum scores or it may turn out a long journey with many hurdles. It is up to the dice. The more moves it takes you to get to the target, the more points you get. I tell you by secret, there are 3 secrets hidden inside the game. (Hint: Two are impossible without the first. Curiosity and wits!!! Once you find it, the other two are the matter of ... 2nd hint: There is no island you can't land on!) Good luck!

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Tips: Weapon speed can be set to zero and it will effectively create a mine.