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Best Castle Defense Online 4P Apps & Games

179+ iOS apps & games curated and reviewed

4.5 avg rating
19 free apps & games
Updated May 2026

Every iPhone needs a few good castle defense online 4p apps. We benchmark 179+ of them on App Store rating, freshness, and pricing, then surface the standouts so you don't have to scroll the App Store yourself.

Top Picks for Castle Defense Online 4P

Castle Defense Online - 4p#1

Castle Defense Online - 4p by donghwan kim

Castle Defense Online
Editor's Choice
🎮 Games
4.2😊(98 ratings)
FreeAdsIn-App Purchases
Castle Defense Online - 4p screenshot 1
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Castle Defense Online - 4p screenshot 3
Castle Defense Online - 4p screenshot 4
Castle Defense Online - 4p screenshot 5
Castle Defense Online - 4p screenshot 6

Castle Defense Online is the world's first real-time multiplayer defense game where 4 players can cooperate in a 2D horizontal scroll. Collect unique characters, skills, and items, build strategic towers, and conquer impossible bosses with friends in the guild. Are you ready to defend the castle against hordes of enemies?

What We Love

  • 👍 Good gameplay mechanics
  • 🎨 Cute character designs
  • 🤝 Enjoyable co-op experience
  • 🕹ī¸ Variety of game modes

Room to Improve

  • 🔁 Repetitive gameplay
  • 🔄 Difficulty spikes in higher levels
  • 🏆 Reliance on high-ranked players for progress
Crazy Defense Heroes: RPG TD#2

Crazy Defense Heroes: RPG TD by Animoca Brands Limited

Tower Defense Strategy Game
Strong Contender
🎮 Games
4.8😐(8.1K ratings)
FreeAdsIn-App Purchases
Crazy Defense Heroes: RPG TD screenshot 1
Crazy Defense Heroes: RPG TD screenshot 2
Crazy Defense Heroes: RPG TD screenshot 3
Crazy Defense Heroes: RPG TD screenshot 4
Crazy Defense Heroes: RPG TD screenshot 5
Crazy Defense Heroes: RPG TD screenshot 6

Embark on an epic tower defense adventure in a realm filled with minotaurs, dragons, and more in this strategic game. Customize your hero, build powerful clans, and lead your army to victory with over 400 cards and various tower defense strategies. Join the battle now!

What We Love

  • 👍 Simple and easy to play
  • 🚀 Can be played offline
  • 🎨 Nice art style and animations
  • 🤑 Can progress without spending money

Room to Improve

  • 🕰ī¸ Slow energy regeneration
  • 🎲 Low drop rates for good cards
  • 💰 Expensive microtransactions
Castle Crafter Survival Craft#3

Castle Crafter Survival Craft by 4 GEN BILGI TEKNOLOJILERI SANAYI TICARET LIMITED SIRKETI

online pixel world craft game
Worth Considering
🎮 Games
4.6😊(17K ratings)
FreeAds
Castle Crafter Survival Craft screenshot 1
Castle Crafter Survival Craft screenshot 2
Castle Crafter Survival Craft screenshot 3
Castle Crafter Survival Craft screenshot 4
Castle Crafter Survival Craft screenshot 5
Castle Crafter Survival Craft screenshot 6

Experience epic warfare in a pixelated world with Castle Crafter Survival Craft. Battle real players in various game modes like Capture The Flag and Team Deathmatch using weapons and strategic tactics. Download now for free and immerse yourself in this thrilling online crafting game!

What We Love

  • 🚀 Childhood game
  • 🎮 Fun game
  • 👍 Decent game
  • 👍 Awesome game

Room to Improve

  • 🐛 Glitchy
  • đŸ”Ĩ Too many ads
  • đŸ”Ĩ Annoying ads

More Castle Defense Online 4P apps to explore

4
Castle Duels: Royal PvP Battle
Castle Duels: Royal PvP Battle
Castle Duels: Royal PvP Battle
Clash of cardsãƒģMerge & Defense
Free

An exciting PvP arena battle application where players merge their troops to build a strong castle and engage in thrilling battles against other players. Experience strategic gameplay, train your troops, and dominate the arena. Download now and conquer the battlefield!

🎮 Games
(5.4K)
5
Merge Clash: Tower Defense
Merge Clash: Tower Defense
Merge Clash: Tower Defense
Tower Defense Games Random PvP
Free

Experience the ultimate tower defense game: build, deploy, and upgrade defenses in a world of endless enemies. Test your strategies in PvP battles, merge towers for extra power, and team up with friends in epic boss fights. Ready to defend your kingdom? Play now!

🎮 Games
(12K)
6
Big Battle 3D
Big Battle 3D
Big Battle 3D
Storm the castle!
Free

Embark on an epic conquest in this addictive strategy game. Build your army, upgrade soldiers and weapons, and strategize to storm castles. How many fortresses can you conquer?

🎮 Games
(38K)
7
Castle Busters
Castle Busters
Castle Busters
Real-Time 1v1 PvP Brawl Arena
Free

Build and battle with your unique fortress in this fast-paced PvP game, where you'll fire projectiles, destroy enemy walls, and eliminate units to emerge victorious. Upgrade your troops, unlock new arenas, and climb the leaderboard in this intense and unpredictable experience.

🎮 Games
(36K)
8
Kingdom Rush Battles: TD Game
Kingdom Rush Battles: TD Game
Kingdom Rush Battles: TD Game
Multiplayer PvP Tower Defense
Free

Get ready for epic real-time battles in the ultimate PvP tower defense game, where you build towers, summon reinforcements, and outsmart opponents to emerge victorious. Join the battle now and prove you're the ultimate general, competing in intense duels and climbing the leaderboard to claim the top spot!

🎮 Games
(8.6K)
9
Castle Creeps TD
Castle Creeps TD
Castle Creeps TD
"Best Strategy Game of 2017"
Free

"Lead troops to victory in a fantasy mobile Tower Defense game. Prepare your defenses to save the kingdom from fierce Warlords and colossal Ogres. Download now to experience award-winning strategy gameplay!"

🎮 Games
(8.4K)
10
Realm Defense: Hero Legends TD
Realm Defense: Hero Legends TD
Realm Defense: Hero Legends TD
Tower Defense Strategy Game
Free

An engaging tower defense strategy game where players defend realms using heroes like dragons and wizards. Features over 300 levels, different worlds with unique towers, powerful heroes with special abilities, epic boss battles, and a variety of enemies to conquer. Download now for a free and fun gaming experience!

🎮 Games
(14K)
11
Boom Castle: Tower Defense TD
Boom Castle: Tower Defense TD
Boom Castle: Tower Defense TD
Idle Tower Defense TD Survival
Free

Survive and defend your castle in an exhilarating roguelike idle tower defense game against evil invaders like orcs and demons. Join powerful heroes, upgrade weapons, and strategically deploy traps to crush enemies in this epic offline adventure. Experience explosive excitement and strategic depth—bring on the boom!

🎮 Games
(7.9K)
12
Magic Rush: Heroes
Magic Rush: Heroes
Magic Rush: Heroes
Fight for the World Throne
Free

Join the ultimate battle in this unique strategy RPG that combines RTS and tower defense elements. Lead your league of Heroes to victory in diverse game modes, online PvP battles, and quest-filled campaigns to become the greatest kingdom defender. Download now for an epic adventure!

🎮 Games
(918)
13
Grow Castle!
Grow Castle!
Grow Castle!
by YONG OK PARK
Free

Protect the castle from enemy attacks in this defense game by strategically placing heroes and upgrades in the castle tower. With over 80 heroes each possessing unique skills, aim to clear higher levels and compete for top rankings globally.

🎮 Games
(2.2K)
14
Defender II
Defender II
Defender II
by DROIDHEN LIMITED
Free

Defender II is a castle defense game where waves of monsters attack, and players must strategically use magic spells, towers, and defenses to protect their castle. Download the app now to experience powerful gameplay and thrilling challenges!

🎮 Games
(1.1K)
15
iBomber Defense Pacific
iBomber Defense Pacific
iBomber Defense Pacific
Award Winning Tower Defense
$2.99

Experience award-winning tower defense gameplay at its best in this action-packed game where you defend your base against attacks from all fronts - land, sea, and air. Upgrade weapons, earn victory points, and strategize your defense for victory. Download now and prepare for battle!

🎮 Games
(49)
16
Defend the Castle: Card TD
Defend the Castle: Card TD
Defend the Castle: Card TD
Deck-builder Tower Defense!
Free

Defend your castle against hordes of enemies by building a tower card deck and ranking up your towers. Collect and level up cards, combine them to create powerful towers, and play with friends to test your strategy in this free-to-download deck building tower defense game.

🎮 Games
(54)
17
Castle Crumble
Castle Crumble
Castle Crumble
Creative destruction
Free

Embark on a conquest in various kingdoms to demolish castles using explosives and spells in an adventurous gameplay experience. Strategize, explore unique realms, and have a blast with physics-based fun. Conquer kingdoms with your tactics in Castle Crumble!

🎮 Games
(30K)
18
Towerlands: Tower defense (TD)
Towerlands: Tower defense (TD)
Towerlands: Tower defense (TD)
Build base & protect Kingdom
Free

In Towerlands, a blend of tower defense and RPG, defend your fortress, expand your kingdom, and engage in strategic battles to conquer new lands. Train your army, build towers, recruit warriors, and collaborate with friends in Clan events to dominate the rankings and build your empire. Join the fight and lead your forces to victory!

🎮 Games
(7.3K)
19
Days Bygone: Castle Defense
Days Bygone: Castle Defense
Days Bygone: Castle Defense
Grow, Defend, Survive!
Free

Embark on an endless defense journey against escalating enemy attacks. Upgrade defenses, unlock weapons, and recruit heroes to fortify your castle in the battle for survival! Start defending now and see how long you can withstand the relentless waves of enemies!

🎮 Games
(2.4K)
20
Outdo.io
Outdo.io
Outdo.io
Be the biggest castle and win!
Free

Experience thrilling gameplay where you collect bricks to build and upgrade your castle while strategically deploying archers for defense. Embrace easy controls and strive to become the top castle to win! Join the adventure today!

🎮 Games
(7.1K)

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