Best Merge Defense Apps & Games

238+ iOS apps & games curated and reviewed

4.5 avg rating
20 free apps & games
Updated May 2026

From beginner-friendly picks to power-user tools, our merge defense list covers 238+ iPhone apps and games updated through May 2026. Compare ratings, prices, and screenshots in one place.

Top Picks for Merge Defense

Fortress Merge#1

Fortress Merge by TapNation

Roguelike City Defend Game
Editor's Choice
🎮 Games
4.6😞(9.7K ratings)
FreeAdsIn-App Purchases
Fortress Merge screenshot 1
Fortress Merge screenshot 2
Fortress Merge screenshot 3
Fortress Merge screenshot 4
Fortress Merge screenshot 5
Fortress Merge screenshot 6

Engage in strategic city defense by merging and upgrading buildings to fend off relentless enemy waves. This action-packed puzzle game challenges you to plan your moves carefully and use resources wisely to survive. Immerse yourself in exciting gameplay with stunning graphics and fast-paced action.

What We Love

  • 👍 Huge game
  • 🚀 Smooth animations and aesthetics

Room to Improve

  • 🔥 Excessive ads, some up to 120 seconds long
  • 🐛 Bugs and glitches (e.g. level 46 issue, experience not earned after leveling up)
  • 💰 Monetization issues (e.g. no option to opt out of data collection)
Rush Royale: Tower Defense RPG#2

Rush Royale: Tower Defense RPG by MYGAMES MENA FZ LLC

PvP Card battle・Merge Strategy
Strong Contender
🎮 Games
4.5😐(94K ratings)
FreeAdsIn-App Purchases
#73in Games
Rush Royale: Tower Defense RPG screenshot 1
Rush Royale: Tower Defense RPG screenshot 2
Rush Royale: Tower Defense RPG screenshot 3
Rush Royale: Tower Defense RPG screenshot 4
Rush Royale: Tower Defense RPG screenshot 5
Rush Royale: Tower Defense RPG screenshot 6

Collect and merge units to build a powerful deck for strategic base defense. Engage in PvP battles or team up with friends in Co-Op mode to conquer enemies and earn rewards. Master unique unit abilities and faction synergies to prevail.

What We Love

  • 🚀 Fun and addictive gameplay
  • 👍 Good casual game for short sessions
  • 💡 Unique tower defense mechanics
  • 🎨 Vibrant and colorful visuals

Room to Improve

  • 💰 Heavily pay-to-win model
  • 🔀 Matchmaking issues and unfair pairings
  • 🐛 Frequent connection issues and bugs
Random Dice: Defense#3

Random Dice: Defense by Crater Co., Ltd.

PVP Random Defense
Worth Considering
🎮 Games
4.6😐(52K ratings)
FreeAdsIn-App Purchases
Random Dice: Defense screenshot 1
Random Dice: Defense screenshot 2
Random Dice: Defense screenshot 3
Random Dice: Defense screenshot 4
Random Dice: Defense screenshot 5
Random Dice: Defense screenshot 6

Engage in strategic tower defense battles by collecting and upgrading powerful dice. Compete in real-time PvP, team up for co-op raids, or test your skills in solo challenges. Master dice combinations to defend your turf against waves of monsters.

What We Love

  • 🚀 Very addictive
  • 👍 Great gameplay and strategy
  • 🎉 Fun co-op mode
  • 💎 Generous free rewards

Room to Improve

  • 🐛 Frequent crashes and connection issues
  • 🤖 Unfair matchmaking with bots
  • 🔒 Difficulty obtaining legendary dice

More Merge Defense apps to explore

4
Power Painter: Shoot & Defense
Power Painter: Shoot & Defense
Power Painter: Shoot & Defense
Paint Ball & Merge Tower Game
Free

Engage in a strategic merge and tower defense game where you merge towers, shoot paint bubbles, and defend against bosses. Progress through increasingly challenging levels with stunning graphics and collect various paintball guns to aid your defense.

Merge towersShoot paintball bubblesPaint the screen
🎮 Games
(47K)
free with in-app purchases
5
Merge Clash: Tower Defense
Merge Clash: Tower Defense
Merge Clash: Tower Defense
Tower Defense Games Random PvP
Free

Engage in strategic tower defense battles by collecting, merging, and upgrading unique towers. Defend your kingdom against waves of enemies and epic bosses in both solo and multiplayer modes. Master deck building and tactical deployment to outwit opponents.

Collect and upgrade 50+ unique towersBuild and upgrade defensesEngage in PvP battles
🎮 Games
(12K)
free with in-app purchases
6
Merge Gun: Tower Defense
Merge Gun: Tower Defense
Merge Gun: Tower Defense
Merge to defend
Free

Merge and upgrade towers to defend your realm against waves of monsters. This game offers simple, engaging gameplay with strategic depth for countless challenges. Enjoy stunning graphics and lively sound in this free-to-play tower defense experience.

Merge and upgrade towersStrategic defense planningDefend against monster waves
🎮 Games
(1.1K)
free with in-app purchases
7
Ammo Fever: Tower Gun Defense
Ammo Fever: Tower Gun Defense
Ammo Fever: Tower Gun Defense
Merge Bullets - Turret Defence
Free

Engage in thrilling base defense by merging ammo boxes to upgrade your firepower and take down waves of enemies. Upgrade your weapons and bullet rush to survive increasingly difficult attacks and become the ultimate defender.

Engaging base defense gameplayMerge ammo boxes to upgrade firepowerUpgrade weapons and fireline
🎮 Games
(55K)
free with in-app purchases
8
Shooting Tower: Defense Game
Shooting Tower: Defense Game
Shooting Tower: Defense Game
Merge guns and guard the base
Free

Engage in an intense shooting and strategy game where you merge defensive towers to repel waves of monsters, orcs, and aliens. Develop tactical formations and upgrade your war machines to protect your base and survive challenging boss attacks.

Merge towers for upgradesStrategic tower placementRepel diverse enemy waves
🎮 Games
(16K)
free with in-app purchases
9
Archer Forest : Idle Defense
Archer Forest : Idle Defense
Archer Forest : Idle Defense
Merge arrows to upgrade archer
Free

Merge arrows to upgrade your archer and defend the forest. Explore vast continents, battle bosses for rewards, and collect unique animal heroes with special abilities. Enjoy simple tap-and-merge gameplay for speedy growth and endless content.

Merge arrows to upgrade archersExplore diverse continentsTap-based gameplay
🎮 Games
(11K)
free with in-app purchases
10
The Tower - Idle Tower Defense
The Tower - Idle Tower Defense
The Tower - Idle Tower Defense
Base defense, kill the enemy
Free

Build and upgrade a single tower to defend against waves of enemies in this incremental tower defense game. Make permanent upgrades, unlock new areas, and compete in tournaments. Enjoy addictive gameplay with a vast array of strategic choices.

Build and upgrade a single towerDefend against enemy wavesPermanent upgrades and research
🎮 Games
(19K)
free with in-app purchases
11
Lucky Defense!
Lucky Defense!
Lucky Defense!
Epic Clash of Survival!
Free

Experience a unique tower defense game where luck dictates your strategy. Summon units, merge them for unpredictable outcomes, and test your fortune with a roulette feature to defeat waves of monsters.

Luck-based unit summoningTower defense gameplayUnit merging for random results
🎮 Games
(12K)
free with in-app purchases
12
Mega Tower - Casual TD Game
Mega Tower - Casual TD Game
Mega Tower - Casual TD Game
Merge your mega tower!
Free

Build and merge towers to defend a planet in this casual strategy game. Strategically deploy and upgrade your defenses to conquer alien worlds. Experience thrilling sci-fi battles with endless challenges.

Casual tower defense gameplayMerge and upgrade towersStrategic deployment
🎮 Games
(5.2K)
free with in-app purchases
13
Grow Castle!
Grow Castle!
Grow Castle!
by YONG OK PARK
Free

Defend your castle from waves of enemies by strategically placing heroes and archers. Upgrade your defenses and recruit over 80 unique heroes, each with special skills, to create powerful combinations and climb the global rankings.

Castle defense gameplayHero and archer placementHero skill system
🎮 Games
(2.2K)
free with in-app purchases
14
Merge Defense Arena
Merge Defense Arena
Merge Defense Arena
Strategic Merge Tower Defense
Free
🎮 Games
(0)
15
Fort Guardian
Fort Guardian
Fort Guardian
Epic Summoning TD Battle!
Free

A defense game combining roguelike action and merge mechanics. Strategically merge upgrades to build the strongest fort and survive endless waves of unique enemies. Choose powerful skills and evolve your defenses in fast-paced, tactical combat.

Strategic merge mechanicsEndless enemy wavesChoose your skills
🎮 Games
(5K)
free with in-app purchases
16
Merge Defense 3D!
Merge Defense 3D!
Merge Defense 3D!
Strategic Tower Defense
Free

Merge Defense 3D is a strategic tower defense game where players merge defenders to upgrade their power and protect against advancing enemy blocks. With challenging brain puzzles, simple controls, and free offline play, it's the perfect game for daring minds. Survive as long as you can and have fun!

🎮 Games
(1.1K)
17
Mini Merge Champions
Mini Merge Champions
Mini Merge Champions
by Popcore GmbH
Free

Merge heroes to build a powerful squad and engage in strategic real-time battles. Unleash unique champion abilities, upgrade your team, and face challenging bosses and roguelike trials. This puzzle-combat hybrid offers deep strategy and explosive action.

Strategic hero mergingReal-time puzzle-combatUnique champion abilities
🎮 Games
(1.1K)
free with in-app purchases
18
King God Castle: Luminous Fate
King God Castle: Luminous Fate
King God Castle: Luminous Fate
Merge Hero,Build Your Strategy
Free

Defend your kingdom from invasion by merging heroes and weapons to form an elite army. Utilize divine relics and build a powerful fortress to crush rivals in real-time PvP and PvE battles. Expand your territory, manage resources, and forge alliances to become the ultimate ruler.

Merge heroes and weaponsTactical squad RPG progressionAuto battler mechanics
🎮 Games
(1.9K)
free with in-app purchases
19
Brave Merge - Battle & Defense
Brave Merge - Battle & Defense
Brave Merge - Battle & Defense
The undead are attacking!
Free

Defend your kingdom from an undead invasion by merging warriors to create powerful knights. Build and upgrade village structures to generate passive income and invest in your army's defense. Strategize your battles against zombie hordes and fearsome bosses in this adventure game.

Merge warriors to level upUnlock village buildings for passive incomeUpgrade buildings with a second currency
🎮 Games
(5.5K)
free with in-app purchases
20
Merge Tactics: Castle Defense
Merge Tactics: Castle Defense
Merge Tactics: Castle Defense
Merge TD - Block the Invaders
Free

This tower defense game challenges players to strategically place and merge blocks to create powerful units. Build diverse decks and expand your territory to fend off waves of invaders, while growing your castle and characters for enhanced skills and rewards.

Strategic block placementMerge blocks into powerful unitsCreate custom battle decks
🎮 Games
(889)
free with in-app purchases

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