A simple tower defense game where you drag and merge towers to level them up. Defend your gem from enemies and bosses with increasingly powerful defenses. Test your tactical skills in this classic genre.



233+ iOS apps & games curated and reviewed
The best merge tower defense 2021 apps and games on iPhone average 4.0★ across 233+ titles — we've ranked them by what real users actually keep on their phones. Updated August 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 | Free | 4.3★ (32) | Yes | No | Jul 2026 | |
| 2 | Free | 4.8★ (14K) | Yes | Yes | Aug 2026 | |
| 3 | Free | 4.7★ (1.5K) | Yes | Yes | Aug 2026 | |
| 4 | Free | 4.7★ (16K) | Yes | No | Aug 2026 | |
| 5 | Free | 4.7★ (891) | Yes | Yes | Aug 2026 | |
| 6 | Free | 4.7★ (852) | Yes | Yes | Aug 2026 | |
| 7 | Free | 4.6★ (531) | Yes | Yes | Aug 2026 | |
| 8 | Free | 4.8★ (2K) | Yes | Yes | Aug 2026 |



A simple tower defense game where you drag and merge towers to level them up. Defend your gem from enemies and bosses with increasingly powerful defenses. Test your tactical skills in this classic genre.






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.






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.


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.


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.


Merge weapons to power up your army and defend your land in this 3D tower defense strategy game. Combine merge, clicker, and idle gameplay to defeat enemies and bosses. Unlock heroes and battle other players for rewards.


Engage in an addictive tower defense experience where you merge cannons to create powerful upgrades. Strategically position your enhanced defenses to repel waves of cube enemies and formidable bosses.


Engage in a unique tower defense experience with idle progression. Combine towers to enhance their power and strategically place them to overcome thousands of enemy waves. Unlock new abilities and power-ups to conquer increasingly challenging stages and bosses.


Merge and defend your kingdom against a horde of monsters using strategic tower defense gameplay. Unlock and combine over 30 unique characters to create powerful heroes and overcome challenging boss fights. Enjoy top-notch graphics and sound in this relaxing yet exciting game.


Merge combat and defense components to reinforce your castle against nightly dragon invasions. Synthesize identical objects to create more advanced defenses and collect treasure chests for extra moves. Protect your castle walls from dragon attacks in this offline-ready game.


Engage in strategic battles by merging and upgrading weapons to defend your room from waves of monsters. Command your defenses and defeat enemies in this intense tower defense experience.




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.


Merge and build a robot army to defend your land from an evil zombie invasion. This idle clicker game combines merging mechanics with tower defense strategy for hours of addictive gameplay.


Engage in a strategic tower defense experience that combines merge mechanics with action. Defend your castle by merging obstacles to enhance their power and unlock abilities. Explore new levels and strategies in this visually appealing game.


Combine turrets to create powerful defenses and battle through over 1500 stages across 15 worlds. Upgrade your turrets with special abilities and compete globally in this one-finger merge and defense game.


Combine 2048 puzzle mechanics with tower defense strategy. Merge and upgrade towers with unique power-ups to obliterate waves of enemies. Experience evolving defenses and challenging levels.


Strategically place and upgrade various towers to defend your home against endless waves of enemies. Adapt your tactics to diverse enemy types and challenging map layouts to emerge victorious.


Engage in a challenging tower defense strategy game where you merge, build, and upgrade towers to defeat waves of enemies. Master tactical placement and utilize explosive abilities across campaign and endless modes.


Build, upgrade, and merge towers to create an impenetrable defense against waves of enemies. Conquer over 10 maps with diverse challenges and compete with friends on leaderboards. Immerse yourself in a visually stunning world with vivid sound effects.