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Strategy Games → Space Defense Game
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Description of Space Defense Game
Space Defense game is in the category of Strategy Games and you can play this free game at OB Games.
General Instructions:
You can play this game for free. On your computer, you can play this game with your mouse or the arrow keys on your keyboard. On your mobile phone or tablet, you can play this game on touch screens by tapping or swiping. The game should fit on your screen. If there is a notification about the orientation of your phone or tablet, please rotate your phone or tablet to correct the orientation. Refresh the page if necessary. If you need help, please leave a comment below the game. You can open other games from below by selecting the recommended games, next or previous games. You can also browse the category you want to play. We wish you luck...
Recommended Games:
Last Ufo Defense
Last Ufo Defense
Last UFO DefenseThe galaxy is no safe place.
As the last UFO of your kind, you stand alone against endless waves of hostile alien forces determined to wipe you out.
Pilot your hovering warship and unleash its full potential:One UFO, endless enemies.
Survive as long as you can with precise upgrades and tactical choices.
Face relentless alien swarms in an endless survival challenge.You are the final line of defense in a hostile galaxy.
How long can the last UFO endure?
Instructions:
use mouse or tap to interact with game elements.
Last UFO DefenseThe galaxy is no safe place.
As the last UFO of your kind, you stand alone against endless waves of hostile alien forces determined to wipe you out.
Pilot your hovering warship and unleash its full potential:One UFO, endless enemies.
Survive as long as you can with precise upgrades and tactical choices.
Face relentless alien swarms in an endless survival challenge.You are the final line of defense in a hostile galaxy.
How long can the last UFO endure?
Instructions:
use mouse or tap to interact with game elements.
Asteroid Shield: Tile-Matching Space Defense
Asteroid Shield: Tile-Matching Space Defense
Asteroid Defens is a clever puzzle game that combines match-3 mechanics with the addictive gameplay of defending a spaceship. Don't let the asteroids get to your spaceship by building your defenses with tactical tile-matching solutions.
Instructions:
Create your own defense
Combine 3 items from the same resource to upgrade them into weapons or defenses. If there are 3 similar weapons or walls nearby, you can combine them to create more powerful blocks.
You have a limited amount of swaps before the asteroids appear, so use them wisely. Position your defenses to withstand the attack! On the 10th and 20th day, the main asteroid appears. After the main asteroid is destroyed, it will break up into many smaller asteroids.
Asteroid Defens is a clever puzzle game that combines match-3 mechanics with the addictive gameplay of defending a spaceship. Don't let the asteroids get to your spaceship by building your defenses with tactical tile-matching solutions.
Instructions:
Create your own defense
Combine 3 items from the same resource to upgrade them into weapons or defenses. If there are 3 similar weapons or walls nearby, you can combine them to create more powerful blocks.
You have a limited amount of swaps before the asteroids appear, so use them wisely. Position your defenses to withstand the attack! On the 10th and 20th day, the main asteroid appears. After the main asteroid is destroyed, it will break up into many smaller asteroids.
Archer vs Zombies: Among Us
Archer vs Zombies: Among Us
Archer vs Zombie Among As — an amazing game in the style of "Tower Defense", in which you will defend the castle from the invasion of impostors zombies Among As. To start playing, click on the arrow in the center. Hordes of alien zombies have arrived on Earth. Master your archery skills to kill all the Among As and their UFOs. The zombies Among As need to be hit several times to kill. The level is given 3 pieces of additional weapons: bombs and burning arrows. They are displayed in the upper-left corner. Tap on the icon to use it. Also, between the rounds of the game, you can buy bombs, the speed of shots for the money earned in the battles. This will make it easier to fight the zombies.
* This application is entertainment and does not claim copyright in any way. All rights to the product Among Us belong to the developer Innersloth.
Instructions:
Touch or mouse control
Archer vs Zombie Among As — an amazing game in the style of "Tower Defense", in which you will defend the castle from the invasion of impostors zombies Among As. To start playing, click on the arrow in the center. Hordes of alien zombies have arrived on Earth. Master your archery skills to kill all the Among As and their UFOs. The zombies Among As need to be hit several times to kill. The level is given 3 pieces of additional weapons: bombs and burning arrows. They are displayed in the upper-left corner. Tap on the icon to use it. Also, between the rounds of the game, you can buy bombs, the speed of shots for the money earned in the battles. This will make it easier to fight the zombies.
* This application is entertainment and does not claim copyright in any way. All rights to the product Among Us belong to the developer Innersloth.
Instructions:
Touch or mouse control
Galactic War
Galactic War
Galactic War is a game which includes past and future at the same time, it has high quality graphics and sounds with old style. You have never played a space shooter, shoot'em up, bullet hell, arcade game which has unique features as Galactic War has.
...world's most addicting space shooter game ever...
Instructions:
WASD or arrow keys to move the ship mouse for the rest
Galactic War is a game which includes past and future at the same time, it has high quality graphics and sounds with old style. You have never played a space shooter, shoot'em up, bullet hell, arcade game which has unique features as Galactic War has.
...world's most addicting space shooter game ever...
Instructions:
WASD or arrow keys to move the ship mouse for the rest
Galaxy Defense
Galaxy Defense
The main shield is constantly rotating around the spaceship in order to protect it. The purpose of the rotating shield into and thus damaging the spaceship. You can touch the screen to move the main shield. If the approaching meteor is at very high speed, touch and hold the screen to speed up the shield. You will have extra shields throughout the game. You will lose your extra shields as meteors hit them and your main shields will become defenceless. Not to worry as you will get extra shields with every new level passed.
REMEMBER! Everytime you touch the screen, the shield will head for the opposite direction.
Instructions:
Action : Mouse Left Button
The main shield is constantly rotating around the spaceship in order to protect it. The purpose of the rotating shield into and thus damaging the spaceship. You can touch the screen to move the main shield. If the approaching meteor is at very high speed, touch and hold the screen to speed up the shield. You will have extra shields throughout the game. You will lose your extra shields as meteors hit them and your main shields will become defenceless. Not to worry as you will get extra shields with every new level passed.
REMEMBER! Everytime you touch the screen, the shield will head for the opposite direction.
Instructions:
Action : Mouse Left Button
Protect the Earth
Protect the Earth
Our blue planet Earth is constantly becoming subject to bombard various celestial bodies, arriving from space, but recently it began to happen more often than usual, and so was put into orbit a rocket capable of protecting the earth's atmosphere from invading. Help her cope with the pressure of meteorites, asteroids and other intruders, shooting them on approaching the Earth. Collect bonuses and secures protection and powerful new weapons.
Instructions:
Use the mouse to touch the spaceship and move it in all directions. For mobile devices, tap the screen.
Our blue planet Earth is constantly becoming subject to bombard various celestial bodies, arriving from space, but recently it began to happen more often than usual, and so was put into orbit a rocket capable of protecting the earth's atmosphere from invading. Help her cope with the pressure of meteorites, asteroids and other intruders, shooting them on approaching the Earth. Collect bonuses and secures protection and powerful new weapons.
Instructions:
Use the mouse to touch the spaceship and move it in all directions. For mobile devices, tap the screen.
Galactic Missile Defense
Galactic Missile Defense
Galactic Missile Defense is a strategy tower defense ( TD ) game set in space, where you are in charge of 3 secret anti-missile technologically-advanced bases that are the last hope to save Earth.
You can upgrade any anti-missile base with a variety of weapons and boosters but you must be careful as each choice requires strategy and skill. Be prepared for quick decisions as the action increases dramatically once you reach the higher levels!
Instructions:
Tap on the screen to shoot towards a direction. You must destroy all visible aliens in order to advance to the next level and unlock more weapons, upgrades and aliens. For each upgrade, you can read the in-game instructions and you can upgrade all weapons for more effects, or even unlock new ones.
Galactic Missile Defense is a strategy tower defense ( TD ) game set in space, where you are in charge of 3 secret anti-missile technologically-advanced bases that are the last hope to save Earth.
You can upgrade any anti-missile base with a variety of weapons and boosters but you must be careful as each choice requires strategy and skill. Be prepared for quick decisions as the action increases dramatically once you reach the higher levels!
Instructions:
Tap on the screen to shoot towards a direction. You must destroy all visible aliens in order to advance to the next level and unlock more weapons, upgrades and aliens. For each upgrade, you can read the in-game instructions and you can upgrade all weapons for more effects, or even unlock new ones.
Invaders Combat EG
Invaders Combat EG
Invaders Combat is a game of Arcade type spaceships, if you liked the mythical games of yesteryear, Invader Combat will not let you down.
This game is set in the games of the recreational machines of the 70 and 80.
It starts easy ... it gets complicated later
Can you get over it?...
Instructions:
Only right arrow + left arrow
Mouse for options while playing
Invaders Combat is a game of Arcade type spaceships, if you liked the mythical games of yesteryear, Invader Combat will not let you down.
This game is set in the games of the recreational machines of the 70 and 80.
It starts easy ... it gets complicated later
Can you get over it?...
Instructions:
Only right arrow + left arrow
Mouse for options while playing
Bubble Shooter Galaxy Defense
Bubble Shooter Galaxy Defense
If you like Diamond Dash games and also space adventures, then Bubble Shooter : Galaxy Defense is the perfect game for you. Take control of a gigantic canon and clear space of the different pieces of armament left by past alien armies.
Instructions:
Show your superiority through two game modes. In the Time Trial Mode, you have two minutes to earn the biggest score while in the survival mode, you must reach an ever growing score.
Make chains of bubbles of the same color.
Until where will you be able to go?
If you like Diamond Dash games and also space adventures, then Bubble Shooter : Galaxy Defense is the perfect game for you. Take control of a gigantic canon and clear space of the different pieces of armament left by past alien armies.
Instructions:
Show your superiority through two game modes. In the Time Trial Mode, you have two minutes to earn the biggest score while in the survival mode, you must reach an ever growing score.
Make chains of bubbles of the same color.
Until where will you be able to go?
Super Fighting Robots Defense
Super Fighting Robots Defense
Lead your units to the final victory. They have started to invade the galaxy and destroy all life. The last hope...: the new Spaceship: BOMBER 2000. A powerfull weapon that should destroy the invaders, and end the stars war... But this spaceship is not finished yet.
You must protect BOMBER 2000 from the invaders
Instructions:
Place towers on the board to defend your base
Lead your units to the final victory. They have started to invade the galaxy and destroy all life. The last hope...: the new Spaceship: BOMBER 2000. A powerfull weapon that should destroy the invaders, and end the stars war... But this spaceship is not finished yet.
You must protect BOMBER 2000 from the invaders
Instructions:
Place towers on the board to defend your base
Space Defense
Space Defense
Space Craft: Ship War
Space Craft: Ship War
Explore deep space, piloting a cubic ship that can be infinitely expanded with modules. Collect new decks, melee and ranged weapons, boosters, and rare upgrades on the map, transforming your ship into a true battle station. Enemies also grow, making every encounter a dynamic battle for survival.
Complete levels, upgrade your stats, unlock new skins, and experiment with builds. Vibrant 3D graphics, rich effects, and constant progression make space battles exciting and unpredictable.
Instructions:
Game Objective:
Destroy enemy ships by collecting modules, upgrading your ship, and surviving longer than anyone else.
Controls:
PC: Use WASD keys to move your ship.
Mobile devices: Use swipes to control movement.
Explore deep space, piloting a cubic ship that can be infinitely expanded with modules. Collect new decks, melee and ranged weapons, boosters, and rare upgrades on the map, transforming your ship into a true battle station. Enemies also grow, making every encounter a dynamic battle for survival.
Complete levels, upgrade your stats, unlock new skins, and experiment with builds. Vibrant 3D graphics, rich effects, and constant progression make space battles exciting and unpredictable.
Instructions:
Game Objective:
Destroy enemy ships by collecting modules, upgrading your ship, and surviving longer than anyone else.
Controls:
PC: Use WASD keys to move your ship.
Mobile devices: Use swipes to control movement.
Earth Defender
Earth Defender
Earth Defender is a fast-paced arcade game where you control a spaceship orbiting around planet Earth. Deadly meteors are flying toward the planet, and it's your mission to stop them before they crash into Earth.
Your ship circles the planet. Time your moves carefully and collide with incoming meteors to destroy them
Tap to change your orbit direction and intercept as many meteors as possible. Survive the meteor storm and defend Earth for as long as you can!
Instructions:
Objective
Protect Earth by destroying meteors before they hit the planet.
Desktop
Click to change the spaceship's orbit direction.
Mobile
Tap the screen to change the spaceship's orbit direction.
Earth Defender is a fast-paced arcade game where you control a spaceship orbiting around planet Earth. Deadly meteors are flying toward the planet, and it's your mission to stop them before they crash into Earth.
Your ship circles the planet. Time your moves carefully and collide with incoming meteors to destroy them
Tap to change your orbit direction and intercept as many meteors as possible. Survive the meteor storm and defend Earth for as long as you can!
Instructions:
Objective
Protect Earth by destroying meteors before they hit the planet.
Desktop
Click to change the spaceship's orbit direction.
Mobile
Tap the screen to change the spaceship's orbit direction.
Shape Shift
Shape Shift
Shape Shift is a fast-paced arcade game set in colorful outer space. Pilot your spaceship through a field of moving geometric shapes and collect the correct targets to score points.
But stay sharp, the target shape or color constantly changes. One moment you must collect blue circles, the next moment it might switch to red triangles. Grab the right shapes and avoid the wrong ones as long as you can!
Instructions:
- Move your spaceship around the screen.
- Watch the current target displayed on the screen.
- Collect only the shapes that match the target color or shape.
- Avoid collecting the wrong shapes.
- The target changes periodically, so stay alert!
Shape Shift is a fast-paced arcade game set in colorful outer space. Pilot your spaceship through a field of moving geometric shapes and collect the correct targets to score points.
But stay sharp, the target shape or color constantly changes. One moment you must collect blue circles, the next moment it might switch to red triangles. Grab the right shapes and avoid the wrong ones as long as you can!
Instructions:
- Move your spaceship around the screen.
- Watch the current target displayed on the screen.
- Collect only the shapes that match the target color or shape.
- Avoid collecting the wrong shapes.
- The target changes periodically, so stay alert!
Ultimate Tower Defense
Ultimate Tower Defense
Ultimate Tower Defense is an exciting strategy game that perfectly blends tower defense, battle, and fast-paced action into one addictive experience. In the game, you must carefully protect defense towers and deploy powerful heroes to stop endless waves of enemies. Each tower has unique attack abilities. Select your preferred mode to begin the challenge.
Instructions:
Mouse click or tap to play
Ultimate Tower Defense is an exciting strategy game that perfectly blends tower defense, battle, and fast-paced action into one addictive experience. In the game, you must carefully protect defense towers and deploy powerful heroes to stop endless waves of enemies. Each tower has unique attack abilities. Select your preferred mode to begin the challenge.
Instructions:
Mouse click or tap to play
Noob Village Tower Defense
Noob Village Tower Defense
Dive into the dynamic world of a 2D platformer, where you play as a noob fighting for the survival of your village! Your main goal is to protect the village from endless waves of monsters appearing from an ominous portal. Control the tower manually: select shells, adjust the trajectory and shoot enemies one by one. Only your accuracy and tactics will help you survive the onslaught!
Instructions:
The goal of the game is to protect the noob village from waves of monsters using manual tower control, improve its defense, develop the settlement, extract resources and build an effective survival strategy.
Dive into the dynamic world of a 2D platformer, where you play as a noob fighting for the survival of your village! Your main goal is to protect the village from endless waves of monsters appearing from an ominous portal. Control the tower manually: select shells, adjust the trajectory and shoot enemies one by one. Only your accuracy and tactics will help you survive the onslaught!
Instructions:
The goal of the game is to protect the noob village from waves of monsters using manual tower control, improve its defense, develop the settlement, extract resources and build an effective survival strategy.
Nautilus Spaceship Escape
Nautilus Spaceship Escape
There is an eerie silence on the Nautilus, an intergalactic spaceship. You have just been asleep when the power goes out for a moment. An uneasy feeling creeps over you - something is wrong here. Could there have been an attack? Get up, explore the surroundings and find out what has happened!
Instructions:
Use mouse to take items and interact.
There is an eerie silence on the Nautilus, an intergalactic spaceship. You have just been asleep when the power goes out for a moment. An uneasy feeling creeps over you - something is wrong here. Could there have been an attack? Get up, explore the surroundings and find out what has happened!
Instructions:
Use mouse to take items and interact.
Polygon Space
Polygon Space
Polygon Space is an intense shooting challenge. Fly a laser cannon in space, battle attacking sci-fi shapes, keep firing, upgrade weapons with resources, destroy them all, and stay safe.
Instructions:
1.Control your turret in endless missions.
2.Tap once and it auto-tracks targets, even idle.
3.Tap to pick targets and command the fight.
Polygon Space is an intense shooting challenge. Fly a laser cannon in space, battle attacking sci-fi shapes, keep firing, upgrade weapons with resources, destroy them all, and stay safe.
Instructions:
1.Control your turret in endless missions.
2.Tap once and it auto-tracks targets, even idle.
3.Tap to pick targets and command the fight.
Xeno Defense Protocol
Xeno Defense Protocol
Xeno Online combines high-octane top-down shooting with strategic tower defense and deep RPG progression. Your mission is simple: Establish a base, defend it against endless waves of insectoid horrors, and extract with your life.
Instructions:
WASD, Mouse, R, G, Mouse Wheel, Space
Xeno Online combines high-octane top-down shooting with strategic tower defense and deep RPG progression. Your mission is simple: Establish a base, defend it against endless waves of insectoid horrors, and extract with your life.
Instructions:
WASD, Mouse, R, G, Mouse Wheel, Space
Exo Observation
Exo Observation
Exo Observation is a space exploration incremental game where you uncover alien worlds and study mysterious lifeforms. You’ll collect resources, build advanced orbital science facilities, and manage them efficiently to progress. Each discovery pushes you closer to unlocking warp gates, letting you expand across the galaxy, and continue your quest for knowledge among distant stars.
Instructions:
Click on the planet to start researching. Continue to click on different areas to maximize your output of various resources.
Exo Observation is a space exploration incremental game where you uncover alien worlds and study mysterious lifeforms. You’ll collect resources, build advanced orbital science facilities, and manage them efficiently to progress. Each discovery pushes you closer to unlocking warp gates, letting you expand across the galaxy, and continue your quest for knowledge among distant stars.
Instructions:
Click on the planet to start researching. Continue to click on different areas to maximize your output of various resources.
Comments to the Game:
Ali | 7/8/2013 11:29:56 AM
I would recommend to anyone to play this super free flash game online. OB Game's other flash games are also superb. I love this site and I would recommend it to anyone.