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Online tower-defense Games
Halloween Tower defense Game

Plays: 3240
Category: Action Games
Use your towers to destroy all Pumpkins. Build more towers to destroy wave after wave of Pumpkins or upgrade your existing towers for more stopping power.
Age of Glory Game

Plays: 3238
Category: Adventure Games
An Ultimate Multiplayer Tower Defense Game. Awesome Graphics & Epic Music! Play together with your friends or against them. No borders, play with anyone from all over the world! Up to 16 Players in the room. And infinite number of rooms.
BugDefender Game

Plays: 3216
Category: Education Games
Bug Tower Defense
Bowling Super Attack tower defense Game

Plays: 3214
Category: Action Games
Destroy all the bowling ball before they reach on the pins side.
Monster Tower Defense Game

Plays: 3214
Category: Action Games
Rejects the monster attacks positioning your towers more efficient
Fortress Barricade Game

Plays: 3189
Category: Adventure Games
Pull the gate up in this defense game and make sure none of the attackers makes it through. You will be in charge of keeping the fortress secure as you are under siege from a race of barbarians. Use the cannon to shoot them and also some other units you can hire.
The Keeper Of 4 Elements Game

Plays: 3184
Category: Action Games
Dark Lord come with his army to the mystical island to find the secrets of ancient magic and use it for their evil deeds. But the island has a defender and own all the forces of nature. Defend yourself and use the power of the 4 elements.
Villainous Game

Plays: 3169
Category: Action Games
From the makers of “I Have 1 Day” and “Don’t Shit Your Pants” comes a new take on Tower Defense. This is a Tower Conquest. Be the villian instead of the hero, siege instead of defend, and take over the world, one kingdom at a time. Rather than building towers and defending against hordes of monsters, you are given the reins of an evil mage that builds his army from the ground up to dominate the lands. You must unlock new units, learn new spells, and think up unique summoning strategies to overcome the defenses of your foes.
Defender's Quest (DEMO) Game

Plays: 3144
Category: Strategy Games
DEMO: A story-driven tactical RPG with a tower-defense inspired battle system. Exiled to a plague colony, a young girl walks between the worlds of life and death as she tries to escape. Recruit and customize dozens of followers in this exciting new game! This DEMO version includes the first 2 of the game's 7 acts.
Baboon Attack TD Game

Plays: 3139
Category: Action Games
Baboon Attack TD is a free online 100 level tower defense game. Save your house by killing baboons those are attacking at your houses. use heavy weapons ti kill them faster in this 2 types of level based unique tower defense game.
Tower Defense Game

Plays: 3139
Category: Action Games
Try to defend your base in this tower defense game with a wide range of strategies to choose from
MonkeyManiac TD Game

Plays: 3137
Category: Other Games
A Monkey versus Aliens based tower defense game. 3 different maps with difficulties (EASY, NORMAL, HARD) 5 upgradable towers. 30 waves of aliens.
Defense of World UFO Game

Plays: 3137
Category: BoardGame Games
Our planet was attacked by aliens from a far galaxy called Tadpole. They are very gluttonous and ate all their food long ago. Now they fly from planet to planet only to fill their stomachs. You have to protect our planet from these gluttons.
Bugs Tower Defense Game

Plays: 3102
Category: Action Games
Kill all bugs before escape from table
Infected Tower Defense Game

Plays: 3097
Category: Action Games
Buy and Upgrade towers to defend yourself from various waves of zombies ! Click How to play to view all the details on how to survive your first wave of zombies.
Little Protectors Game

Plays: 3097
Category: Action Games
These Little guys need your help to rid the world of baddies. Protector Style! A light-hearted defense game streamlining and simplifying Protector gameplay while adding fun new features. Loot collection, resource harvesting, advanced targetting, multiple game modes and much, much more. To clarify: This is NOT a sequel to Protector IV, it is a completely different, far more simple tower defense game. Little Dress Up/ Known Blueprints screen is PURELY to allow you to browse blueprints you’ve collected and see how they look… Not to let you start with uber equipped units. Duh.
Zaptonia Defenses Game

Plays: 3080
Category: Strategy Games
Your king has trusted you with the almighty duty of protecting your home town from creeps who are attacking! You must strategically lay down towers in order to destroy and eliminate any threat which comes in your way! You have six different towers, and many upgrades to choose from and they each have their own speciality. Good luck, have fun and most important of all: do not let your king down!
Planet Defense: G10 Game

Plays: 3033
Category: Action Games
Planet Defense is a tower defense style game that requires offensive tactics to win. You control a small ship that can build towers and capture bases. Defend your base from the onslaught of enemy robots to avoid losing, but to win you must capture the enemy's base!
Footbal Tower Defense Game

Plays: 3013
Category: Action Games
Destroy all the balls before they reach the gate. Place towers on the ground efficiently and win.
Space Miners Game

Plays: 3009
Category: Action Games
Space strategy tower defense. Research weopons and stuff to kill the evil aliens.

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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.