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Flash → Ultimate Tower Defense Game
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Description of Ultimate Tower Defense Game
Ultimate Tower Defense game is in the category of Flash and you can play this free game at OB Games. 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
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:
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.
Stack Tower Pro
Stack Tower Pro
Test your precision in this addictive 3D block stacking game! Build the tallest skyscraper, unlock stunning themes, and master the art of balance. Can you reach the stars?
Instructions:
Tap / Click: Drop the block at the perfect moment.
Test your precision in this addictive 3D block stacking game! Build the tallest skyscraper, unlock stunning themes, and master the art of balance. Can you reach the stars?
Instructions:
Tap / Click: Drop the block at the perfect moment.
Wacky Strike
Wacky Strike
This time you will choose who are you actually. Well, no. Who is the strongest! Girls, or boys! So, just build a lot of towers, and buy your cool enemy! Fight like the real hero and you will cope with it, just try it!
Are you a good fighter? Then this game is for you! Just pick a side, setup your troops, and fight against your mortal enemy, do you think that it is so easy?! Then march from your castle to the enemy castle claiming ground in between.
Instructions:
Mouse
or Keyboard
1, 2, 3, 4 - building units
5, 6, 7 - building base
8, 9, 0 - powerups
Arrow Left/Right - map scrolling
This time you will choose who are you actually. Well, no. Who is the strongest! Girls, or boys! So, just build a lot of towers, and buy your cool enemy! Fight like the real hero and you will cope with it, just try it!
Are you a good fighter? Then this game is for you! Just pick a side, setup your troops, and fight against your mortal enemy, do you think that it is so easy?! Then march from your castle to the enemy castle claiming ground in between.
Instructions:
Mouse
or Keyboard
1, 2, 3, 4 - building units
5, 6, 7 - building base
8, 9, 0 - powerups
Arrow Left/Right - map scrolling
Summon Tribe
Summon Tribe
Summon Tribe is a simple merge-and-defense game where you combine identical units to create stronger ones to stop enemies. It’s easy, mostly for passing time, and it also supports idle play.
Instructions:
Merge facilities, traps, and turrets to build the strongest defense. Plan carefully in limited space and defeat your enemies! Choose your skills to boost your defense and find the best combo to survive.
Summon Tribe is a simple merge-and-defense game where you combine identical units to create stronger ones to stop enemies. It’s easy, mostly for passing time, and it also supports idle play.
Instructions:
Merge facilities, traps, and turrets to build the strongest defense. Plan carefully in limited space and defeat your enemies! Choose your skills to boost your defense and find the best combo to survive.
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
Frost Defense
Frost Defense
❄️ Embark on a thrilling journey through a frozen wilderness in Frost Defense, a strategic tower defense game that puts your tactical skills to the test! ??
In this action-packed adventure, you'll take on the role of a lone survivor ?♂️ battling against the relentless onslaught of arctic creatures ??❄️?.
The enemy is merciless — only your ingenuity and strategic prowess can keep you alive in this harsh frozen world. ⚔️?️
Instructions:
Use mouse to draw path and click on machine to upgrade
❄️ Embark on a thrilling journey through a frozen wilderness in Frost Defense, a strategic tower defense game that puts your tactical skills to the test! ??
In this action-packed adventure, you'll take on the role of a lone survivor ?♂️ battling against the relentless onslaught of arctic creatures ??❄️?.
The enemy is merciless — only your ingenuity and strategic prowess can keep you alive in this harsh frozen world. ⚔️?️
Instructions:
Use mouse to draw path and click on machine to upgrade
Grass Defense
Grass Defense
Grass Defense is a strategic tower defense where you must protect the wilderness from waves of fierce creatures. Build and upgrade powerful towers, manage resources, and adapt your tactics as enemies grow stronger. With dynamic environments, diverse foes, and challenging levels, you’ll test your strategy and skill to survive the untamed wilds and uncover hidden mysteries.
Instructions:
Use the left mouse button to interact
Grass Defense is a strategic tower defense where you must protect the wilderness from waves of fierce creatures. Build and upgrade powerful towers, manage resources, and adapt your tactics as enemies grow stronger. With dynamic environments, diverse foes, and challenging levels, you’ll test your strategy and skill to survive the untamed wilds and uncover hidden mysteries.
Instructions:
Use the left mouse button to interact
Obby Rainbow Tower
Obby Rainbow Tower
Obby Rainbow Tower is a fast, winter-themed tower race where every second and every jump matters. Each floor is packed with moving platforms, icy tiles, spinning lava bars, surprise snowstorms and snowball portals that try to knock you into the void. You can replay the tower as many times as you like, trying to beat your own best time or racing a friend side by side in 2 player mode.
Instructions:
Player 1: Move W A S D, Sprint Shift, Jump Space, Double Jump Space+Space
Player 2: Move Arrows, Sprint K, Jump L, Double Jump L+L
Mobile: On-screen buttons.
Obby Rainbow Tower is a fast, winter-themed tower race where every second and every jump matters. Each floor is packed with moving platforms, icy tiles, spinning lava bars, surprise snowstorms and snowball portals that try to knock you into the void. You can replay the tower as many times as you like, trying to beat your own best time or racing a friend side by side in 2 player mode.
Instructions:
Player 1: Move W A S D, Sprint Shift, Jump Space, Double Jump Space+Space
Player 2: Move Arrows, Sprint K, Jump L, Double Jump L+L
Mobile: On-screen buttons.
Tower Stack 2026
Tower Stack 2026
Tap the screen or click the mouse to drop the block. The goal is to stack blocks perfectly and build the highest tower possible. It requires timing and precision.
Stack the blocks as high as you can! Test your precision and timing in this addictive arcade game.
Instructions:
Tap screen or click mouse to drop the block.
Tap the screen or click the mouse to drop the block. The goal is to stack blocks perfectly and build the highest tower possible. It requires timing and precision.
Stack the blocks as high as you can! Test your precision and timing in this addictive arcade game.
Instructions:
Tap screen or click mouse to drop the block.
Merge Tower Hero
Merge Tower Hero
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Instructions:
Use the mouse or touch to merge the characters
Dive into Merge Tower Hero, an exhilarating online puzzle - Merge game that sharpens your mathematical thinking while exhilaratingly combining action, strategy, and combat. Assemble your team and tackle challenging battles that require not only strength but clever gameplay strategies to prevail!
Instructions:
Use the mouse or touch to merge the characters
Monkey Bubble Defense
Monkey Bubble Defense
Survive the bubble invasion in this fast-paced 2D top-down tower defense game. Construct and upgrade various defensive turrets to take down hordes of bubbles.
Earn cash by popping bubbles. Use cash to to purchase new towers, upgrade existing ones, or sell for cash and reinvest into a different turret.
Instructions:
Construct turrets to protect your base from rogue bubbles.
Survive the bubble invasion in this fast-paced 2D top-down tower defense game. Construct and upgrade various defensive turrets to take down hordes of bubbles.
Earn cash by popping bubbles. Use cash to to purchase new towers, upgrade existing ones, or sell for cash and reinvest into a different turret.
Instructions:
Construct turrets to protect your base from rogue bubbles.
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.
Ancient Wars: Caesar
Ancient Wars: Caesar
Ancient Wars: Caesar is an exciting strategy game in which you lead an army and fight for supremacy on the battlefield. The game takes you to the world of epic battles where tactics, planning and proper utilization of resources are important. Control various units, including warriors, archers and generals, to destroy enemy troops and destroy their base.
Instructions:
In Ancient Wars: Caesar you will have to control an army to defeat your enemies and destroy their base. At the beginning of each level, you have gold that you can use to hire soldiers. Choose units such as warriors, archers or generals and send them into battle.
Each unit has its own features and cost, so it's important to strategize about who to send first and who to leave in reserve. Earn gold by destroying enemies and use it to hire new fighters or support soldiers with abilities.
Ancient Wars: Caesar is an exciting strategy game in which you lead an army and fight for supremacy on the battlefield. The game takes you to the world of epic battles where tactics, planning and proper utilization of resources are important. Control various units, including warriors, archers and generals, to destroy enemy troops and destroy their base.
Instructions:
In Ancient Wars: Caesar you will have to control an army to defeat your enemies and destroy their base. At the beginning of each level, you have gold that you can use to hire soldiers. Choose units such as warriors, archers or generals and send them into battle.
Each unit has its own features and cost, so it's important to strategize about who to send first and who to leave in reserve. Earn gold by destroying enemies and use it to hire new fighters or support soldiers with abilities.
Ultimate Yatzy
Ultimate Yatzy
Ultimate Yatzy is the classic dice game that delivers endless fun and excitement. Roll five dice to score the best combinations and outsmart your opponents. Whether you're a casual player or a Yatzy pro, this game blends strategy and luck to keep you challenged and entertained. Aim for a Full House, a Straight, or the elusive Yatzy—every roll is a new chance to win.
Instructions:
Roll five dice and aim for the best combos over 13 rounds. Score high in each category—highest total wins! Bonus points for top scores and extra Yatzys!
Ultimate Yatzy is the classic dice game that delivers endless fun and excitement. Roll five dice to score the best combinations and outsmart your opponents. Whether you're a casual player or a Yatzy pro, this game blends strategy and luck to keep you challenged and entertained. Aim for a Full House, a Straight, or the elusive Yatzy—every roll is a new chance to win.
Instructions:
Roll five dice and aim for the best combos over 13 rounds. Score high in each category—highest total wins! Bonus points for top scores and extra Yatzys!
Farm Defense
Farm Defense
Farm Defense is a fast, arcade-style shooter where you guard your ranch from waves of quirky mutants. Move between lanes, aim, and blast anything that crawls out of the burrows before it reaches your crops. Earn coins, unlock new weapons and gadgets, and power up your electric fence. Bright visuals, snappy controls, and escalating waves make every run tense and satisfying.
Instructions:
Swipe or use the arrow keys to switch lanes. Pick up coins and boosters, then invest them between waves to upgrade damage, fire rate, ammo, or special skills. Keep enemies from crossing the defense line—survive the wave to advance. Tougher creatures and mini-bosses appear later, so manage your upgrades wisely and protect the farm!
Farm Defense is a fast, arcade-style shooter where you guard your ranch from waves of quirky mutants. Move between lanes, aim, and blast anything that crawls out of the burrows before it reaches your crops. Earn coins, unlock new weapons and gadgets, and power up your electric fence. Bright visuals, snappy controls, and escalating waves make every run tense and satisfying.
Instructions:
Swipe or use the arrow keys to switch lanes. Pick up coins and boosters, then invest them between waves to upgrade damage, fire rate, ammo, or special skills. Keep enemies from crossing the defense line—survive the wave to advance. Tougher creatures and mini-bosses appear later, so manage your upgrades wisely and protect the farm!
Obby Tower
Obby Tower
Climb. Think. Survive.
Ascend a towering obstacle course filled with tricky jumps, moving platforms — and surprise math challenges! Combine your parkour skills with quick thinking to make it to the top.
Perfect for players who love obbies and want to test both reflexes and brainpower.
Instructions:
1. Start at the base of the tower.
2. Jump, dodge, and parkour through a series of obstacles.
3.Reach math checkpoints where you must solve problems to proceed.
5. One wrong move and it’s back to the bottom!
6. Climb as high as you can to earn rewards and bragging rights.
Climb. Think. Survive.
Ascend a towering obstacle course filled with tricky jumps, moving platforms — and surprise math challenges! Combine your parkour skills with quick thinking to make it to the top.
Perfect for players who love obbies and want to test both reflexes and brainpower.
Instructions:
1. Start at the base of the tower.
2. Jump, dodge, and parkour through a series of obstacles.
3.Reach math checkpoints where you must solve problems to proceed.
5. One wrong move and it’s back to the bottom!
6. Climb as high as you can to earn rewards and bragging rights.
Bubble Shooter Witch Tower 2
Bubble Shooter Witch Tower 2
Bubble Shooter: Witch Tower 2 brings back the magic in a fun, family-friendly way! Pop colorful bubbles, unlock cozy enchanted rooms, and help the Witch Tower shine again. Meet adorable familiars, enjoy charming details, and celebrate the magic of every season — even a touch of Halloween spookiness! Easy to play for all ages, with plenty of bubble-shooting fun to enjoy anytime.
Instructions:
Drag to aim and shoot bubbles. Match 3 or more of the same color to pop them. Clear levels to restore new rooms in the Witch Tower. Use boosters to help on tricky stages and try to earn 3 stars on every level!
Bubble Shooter: Witch Tower 2 brings back the magic in a fun, family-friendly way! Pop colorful bubbles, unlock cozy enchanted rooms, and help the Witch Tower shine again. Meet adorable familiars, enjoy charming details, and celebrate the magic of every season — even a touch of Halloween spookiness! Easy to play for all ages, with plenty of bubble-shooting fun to enjoy anytime.
Instructions:
Drag to aim and shoot bubbles. Match 3 or more of the same color to pop them. Clear levels to restore new rooms in the Witch Tower. Use boosters to help on tricky stages and try to earn 3 stars on every level!
Marble Run - Ultimate Race
Marble Run - Ultimate Race
Race, roll, and clash in Marble Run, the ultimate marble racing game! Guide your marble through physics-based tracks, dodge obstacles, knock rivals off the edge, and aim for the finish line.
With fast-paced races, competitive knockout rounds, and fun marble skins, it’s the most addictive 3D marble runner you’ll play!
Instructions:
Swipe or tilt to control your marble, avoid traps, push opponents off, and race to the finish without falling!
Race, roll, and clash in Marble Run, the ultimate marble racing game! Guide your marble through physics-based tracks, dodge obstacles, knock rivals off the edge, and aim for the finish line.
With fast-paced races, competitive knockout rounds, and fun marble skins, it’s the most addictive 3D marble runner you’ll play!
Instructions:
Swipe or tilt to control your marble, avoid traps, push opponents off, and race to the finish without falling!
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.