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.

Compare top Merge Defense Apps & Games (May 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Fortress MergeFortress MergeFree4.6★ (10K)YesYesJul 2026
2Rush Royale: Tower Defense RPGRush Royale: Tower Defense RPGFree4.5★ (95K)YesYesJul 2026
3Random Dice: DefenseRandom Dice: DefenseFree4.6★ (53K)YesYesJul 2026
4Power Painter: Shoot & DefensePower Painter: Shoot & DefenseFree4.6★ (47K)YesYesJul 2026
5Merge Clash: Tower DefenseMerge Clash: Tower DefenseFree4.8★ (13K)YesYesJul 2026
6Merge Gun: Tower DefenseMerge Gun: Tower DefenseFree4.8★ (1.1K)YesYesJul 2026
7Ammo Fever: Tower Gun DefenseAmmo Fever: Tower Gun DefenseFree4.6★ (55K)YesYesJul 2026
8Shooting Tower: Defense GameShooting Tower: Defense GameFree4.7★ (16K)YesNoJul 2026

Top Picks for Merge Defense

Fortress Merge#1

Fortress Merge by TapNation

요새 병합하다 퍼즐 도시 방어 전쟁게임
Editor's Choice
🎮 Games
4.6😞(10K 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😐(95K ratings)
FreeAdsIn-App Purchases
#61in 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 111%

PVP Random Defense
Worth Considering
🎮 Games
4.6😐(53K 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
(13K)
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!
운빨만 믿고 가는 캐주얼 타워 디펜스 게임
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

A turn-based tower defense game where players strategically place and merge defenders to fend off advancing enemy blocks. It offers offline play and a challenging puzzle experience for a daring mind.

Turn-based gameplayMerge defenders to upgradeStrategic placement
🎮 Games
(1.1K)
free with in-app purchases
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
킹갓캐슬: 빛의 운명
킹갓캐슬: 빛의 운명
킹갓캐슬: 빛의 운명
덱 구성과 배치 전략으로 완성하는 디펜스 RPG
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

FAQ about Merge Defense

What are the best merge defense apps & games for iPhone?
Fortress Merge tops our merge defense apps & games ranking as of May 2026, with a 4.6-star average from 10K App Store ratings, and it's free to download.
Yes — 20 of the top merge defense apps & games we rank are free to download, including Fortress Merge and Rush Royale: Tower Defense RPG.
Fortress Merge shows ads and offers in-app purchases, according to its App Store listing as of May 2026.
We track 238+ merge defense apps & games on the iOS App Store as of May 2026, ranked by rating, recency, and analysis of real user reviews.
Fortress Merge is a roguelike city defense game where players merge and upgrade buildings to create powerful defenses. The goal is to strategically plan moves and use resources to fight off waves of enemies determined to destroy the player's home.
Key features include merging and upgrading various buildings to enhance defenses, strategic gameplay requiring careful planning and resource management, defending against increasingly difficult enemy waves, and engaging puzzle mechanics with stunning graphics and fast-paced action.

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