Welcome to the Defense Flash Game section of Game O, here you can find all the Defense flash games from the classic Defense games to the newest and most revolutionary Defense flash games. Thanks for visiting Game O and enjoy all these awesome Defense flash games!
New Defense Games
Check out the latest of Defense flash games!
Bloon Tower Defense 3  Bloon TD game series is only getting better as it is with this newest release, make sure to pop all the bloons before they get to your base, good luck in this awesome Bloon Tower Defense 3 Game ... |
Warzone Defense  You have been assigned a critical task of defending the warzone by building up various towers in order to take out enemy lines, be sure you are quick enough to upgrade them as enemies will only get st ... |
Stickman Madness 3  New and utmost fierce waves of stickman are back, defend your base at all cost in this fun stickman madness 3 game ... |
Tower Defence Canyon  You have been pushed back all the way to the canyon and will have to build up a base and protect yourself at all cost against enemy waves, good luck and have fun with this tower defense canyon game ... |
Whiteboard Tower Defense  Awesome defense game in which you will have to defend the whiteboard by building defense towers fast enough to stop increasingly stronger enemy waves, have fun and good luck with Whiteboard Tower Defe ... |
Jelly Castle  Awesome defense game in which you have to build up your jelly defense systems to take out all enemy waves. Good luck and have fun with this thrilling jelly castle game ... |
Gemcraft  A cool original version of defense games, in which you have to use your gems to defend yourself against waves of increasignly dangerous enemies. Good luck and have fun with gemcraft game ... |
Ultimate Defense 2008  We have had many new defense games but this games name says it all, it is the ultimate defense of the year, so use your mouse to build up various structures to take out enemy waves, best of luck in th ... |
Top Game O Defense Games
Check out the top Game O Defense flash games:
Boons Tower Defense 2  If you thought the first bloons tower defense was easy, here is a little treat for you, all new bloons tower defense with more levels, weapons and more. Enjoy new bloons tower defense 2 ... |
Whiteboard Tower Defense Awesome defense game in which you will have to defend the whiteboard by building defense towers fast enough to stop increasingly stronger enemy waves, have fun and good luck with Whiteboard Tower Defe ... |
Tower Defence Canyon You have been pushed back all the way to the canyon and will have to build up a base and protect yourself at all cost against enemy waves, good luck and have fun with this tower defense canyon game ... |
Stickman Madness 3 Stronghold  Absolutely awesome stick man game, in which you have to hold your stronghold down against raging enemies, be sure to grab some new weapons and powerups as you go to make sure you can keep up with the ... |
Stickman Madness 3 New and utmost fierce waves of stickman are back, defend your base at all cost in this fun stickman madness 3 game ... |
Unlimited Zombies  After beating zombies up in previous game they have created an apparatus that will generate an unlimited number of zombies, so all you can hope to do is fight them off while you are trying to come up ... |
Fat Boy Girlfriend Tower Defense  We have seen many defense games, but this one is something else, the title alone make this game awesome. Build up some towers and defend the fat boys girlfriends, since if this one leaves him, chances ... |
Jelly Castle Awesome defense game in which you have to build up your jelly defense systems to take out all enemy waves. Good luck and have fun with this thrilling jelly castle game ... |
Random Defence  One awesome tower defence game in which the enemies are tough, weapons are massive and adrenaline is unmatched by any other defense game, so be sure to try this awesome game out. Best of luck in this ... |
Gemcraft A cool original version of defense games, in which you have to use your gems to defend yourself against waves of increasignly dangerous enemies. Good luck and have fun with gemcraft game ... |
Lockdown Tower Defense  One of your biggest tower defense challenges is here in this Lockdown tower defense game where you will have to research new towers, build them and upgrade to try to keep up with the ever growing enem ... |
Global Defense  Global Defense is no easy task and should not be taken lightly, this is why you, the expert have been assigned for the task. Make appropriate decisions to keep everything safe. Have fun with Global De ... |
Active Defense Revolution  A new fun defense game in which you will be dealing with many colorful enemies which you will have to stop by building up and upgrading various defense systems, have fun and good luck with active defe ... |
Defend the Flag  A fun blend of action and defense game where you will have to defend the flag at all cost, so get to picking out weapons and get ready for intense battle in this new defend the flag game ... |
Invasion 3  start a new game, then click on the names of a few units to purchase them for your army. When you think you are about ready, start the game! You will be on the hattlefield. Click on the names of the u ... |
Tur3t Duhfenz  A game with a fabulous name and even a better game play, this is not your ordinary defense game, so make sure to check it out. Have fun ... |
Defend Your Castle  Your kingdom is under the onslaught of an invading enemy, and you must defend your castle. You will need both speed and agility to survive. To kill enemy units, pick them up with the mouse and fling t ... |
The Last Stand 2  After great success in your Last Stand you have managed to escape, but after finding out about your new location all the past enemies and their brother are after you again, so you will now have to mak ... |
Crystal Defense  There is a guy in the middle of the field who just so happens to be you. Well so now that you are stuck in this Crystal Defense position you have to use your bow to kill all the enemies that charge at ... |
Ramparts  New and fun defense game in which you have to to battle with ramparts for survival, make sure to build and upgrade as much as the budget allows as it will only be getting more challenging. Have fun an ... |
Defend Your Inglor  For a long time there has been a fierce debate as to the appearance of the legendary inglor. How, it has finally been revealed that the inglor is not a panda bear at all, it is, in fact, a highly adva ... |
Turret Defense  This is another game where you defent your base, this time you have different circumstances though, so try Turret Defense and defend your territory. Use your cannon to shoot down enemy men and tanks. ... |
Shock Defence  Awesome defense game with is a very miniature game of age of empires. In shock defense you have to shock all the enemies to death so that they do not make it all around the battle field. Build various ... |
Horizon War  You have been assigned the duty of operating the auto cannon on top of the hill overlooking the whole horizon of the war territory. Shoot down all the approaching opponents before they get to you. Bes ... |
Bacteria Tower Defense  Various bacteria is attacking all possible body parts one by one, build up powerful towers of your immune system to be able to withstand the attacks, have fun and good luck staying healthy in this tri ... |
Ultimate Defense 2008 We have had many new defense games but this games name says it all, it is the ultimate defense of the year, so use your mouse to build up various structures to take out enemy waves, best of luck in th ... |
Air Defence 3  You have to defend the tower, that is your main goal. Your guns are Flak cannons that are fully up to you to operate. You have to hit the opposing planes with the shots from those particular cannons. ... |
Christmas Castle Defense  Santa is throwing a huge Christmas party and all sorts of people are trying to crash his party at the winter castle. It is your job to protect the castle from all the unwanted visitors. As you start t ... |
Superman Metropolis Defender  Superman is back at it in metropolis defending people from bad creatures and bad things happening. Have fun with superman the metropolis defender. ... |
Demonic Defence 4  this is by far the best and most advanced demonic defence game yet. There are 4 different mode classic, drap and drop, hold and custom game. In each mode there is a particular way of killing enemies s ... |
Sea of Fire 2  You have to select an empty tile and contruct some buildings on them. THen use the structures to produce units with which to destroy the enemy base. Once the units are produced units will attempt to r ... |
Budapest Defenders  Well we have defended hundreds of things, castle and bases in defense games, even fat boys girlfriend has gotten some defense. Well this time Budapest is in danger to make sure to do your best to defe ... |
Canyon Shooter  Enemies have located and are attacking your secret and last hide out the canyon, you will now have to take them all out to protect your people, best of luck in defending yours in this intense canyon s ... |
Multiplayer Flash Tower Defense  You gotta love the developments in technology, now you can play this awesome tower defense game while chatting it up with tons of other players, sweet. So dont waste any more time and get to playing t ... |
360 Defence  Guess what, another defence game is coming your way, this one should really challenge your previously gained defence skills. Have fun with 360 defence game. ... |
Bloons Tower Defense  Guess what, another defense game, this time you are simply popping some bloons from the towers, might sound easy, but it gets truely challenging once the balloons get bigger and thicker. Have fun with ... |
Block Defender  This is one of more original flash games around where you get to be the block defender, protect the blocks in the way that you only build proper combinations. Have fun with block defender ... |
Defender Hold the Holy Pig  One of the more original defender games where you have to hold the holy pig from getting to your yard. Good luck in Defender Hold the Holy Pig Game ... |
Strategy Defense  Defense is no good unless you do it with strategy. Devise a strategy and go ahead with defending your base. Good luck in this strategy defense game ... |
Dungeon Defender  Your army has been cornered into the dungeon and now there is no way out but take a stance and take out all the enemy waves, be sure to use the good stolen from defeated enemies to your advantage, bes ... |
Temple Guardian 2  You have protected your temple with great success the first time, but it seems that enemies have only gotten stronger, so you will have to step up your defense skills as well in this challenging templ ... |
Fanta Factory Defender  You love your fanta and there is no way you will let the factory get attacked, so build up powerful towers to protect the factory from the enemies, have fun with this cool fanta factory defender game ... |
Helix Defense  Helix is under attack and you have been assigned to protect the helix at all cost, build up the defense towers as fast as possible since even the first waves of enemies will be very challenging, best ... |
Final Defense  Click to shoot, space to shield, 1 to mine, 2 to shockwave, 3 to bomb and a to pause. Drage themouse over a question mark. You are going to be attacked by various advanced tanks, and you have to fight ... |
Defend Your Temple  your temple is being attacked by anybody and everybody and it is up to you to defend it. Use the arrow keys or wasd controls to move, press shift or spacebar to switch weapons, use the mouse to aim an ... |
Shield Defense 1.4  New and improved shield defense game which makes it one of the best defense games out there. Enjoy the new shield defense game ... |
Turret Defense RPG Time for a little more defending, this time turret defense RPG style. So what are you waiting for, go on and defend your turrets now. Enjoy turret defense RPG game. ... |
Simple Tower Defense  At first sound it might seem awful easy in a SIMPLE tower defense , but just because the game is simple, does not make it easy, this will be one of the most challenging defense games you will encounte ... |
Defend Your Mom  Most families in the world have strong family values especially value mother and father, and now it seems that somebody is attacking your mom. Are they kidding or what. Defend your mom by beating the ... |
Marksmen Defense  Awesome defense game where you have to build and advance towers fast enough to not let the enemies to get through to your base. Have fun in the marksmen defense game ... |
Eye Defense  The eye is the center of the universe and it is up to you to defend it. Drag various items onto the screen to protect the eye and let it live happily. Have fun with defend the eye game. ... |
Bridge Guardian  You have been assigned a very important job as the bridge guardian, and not just any bridge you are the bridge guarding of one of the most used bridges in your country. Use the arrows to shoot down al ... |
Project Midnight  At midnight all the monsters come out to attack you, so you need to be ready with the best available weapons to take on the waves of enemies, good luck and have fun with this awesome project midnight ... |
Base Defence 2 Monster  It is your task to defend your base against monster attackers, they will get more health after each attack, shoot them to get money, use money to buy and upgrade weapons. Controls: use the mouse to ai ... |
Castle Siege  Use the mouse to point, a to shoot fireballs and s to shoot arrows (whenever you build the approporiate towers). The objective of this game is to defeat the darm armies that seek to destroy your castl ... |
Tank Defense  All you have left to defend your base is your tank, so make sure to use it wisely in defeating waves of enemies in this awesome tank defense game ... |
Orbit Defense  You are working as a security guard in the orbit alien camps orbit defense headquarters, your goal is to at all cost prevent all the rebels from leaving the orbit. You have a great lased wall to help ... |
Abbyss Defense  You are a side ship to the big mother ship and your only job is to protect the mother ship in the abbyss defense. Kill off all the enemies as soon as they appear on the screen to ensure that the main ... |
Color Defense  Since we have so many defense games, why not have a color defense game. When the colors fly at you turn the matching color side towards that block to score some defense points. Have fun with the color ... |
Global Defense System  It is up to you to save the world from a wave of asteroids that are heading straight towards earth! Upgrade and buy weapons platforms between levels. Every weapon platform has the capacity to hold up ... |
1 - 2