Fortress Merge: Puzzle Defense

In-app purchases
4.2
18.3K reviews
500K+
Downloads
Content rating
Everyone 10+
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About this game

Fortress Merge: Puzzle Defense is your next addictive obsession in the world of strategy games! Step into a thrilling realm where every puzzle you solve fortifies your castle defense. Defend your city, merge your way to power, and conquer endless enemies in this action-packed puzzle defense experience. In Fortress Merge: Puzzle Defense, the key to survival lies in how you merge, upgrade, and defend. Welcome to the ultimate test of tactics, timing, and tenacity. If you're a fan of zombie tower defense, roguelike challenges, and strategic gameplay — Fortress Merge: Puzzle Defense was made for you!

Immerse yourself in a world where your fortress is constantly under siege by waves of terrifying zombies. Only the sharpest minds can master the art of merging and stand strong in this apocalyptic realm. With influences from top strategy war games, this title combines the tactical depth of battle strategy games with the casual appeal of puzzle mechanics and the intensity of castle defense.

Prepare to rise as the ultimate guardian of your land. With each wave, your fort becomes a symbol of resistance. This game amps up the stakes with intense roguelike gameplay that ensures no two runs are the same. Plan your upgrades, merge powerful facilities, and choose the right skills to build an impenetrable fortress. Whether you're a seasoned tactician or new to tower games, the fast-paced, ever-changing combat will keep you on your toes.

Fight off zombies in epic tower defense showdowns as you make each choice count. Will you build your strategy around devastating traps, elite knight games units, or brute-force turrets? How will you respond when your base is under siege with no escape? With every wave, you'll unlock new content, test your tactics, and define your legend.

From engaging casual sessions to hardcore strategy games marathons, this game caters to all playstyles. Challenge yourself with tough decisions and satisfying victories that define great defense games.

Features:
šŸ”„ Merge & Upgrade: Combine different types of buildings to create powerful structures and enhance your defenses.

🧠 Strategic Gameplay: Think ahead, plan your moves carefully, and use your resources wisely to outsmart your enemies.

āš”ļø Wave After Wave: Defend your home from increasingly difficult waves of enemies — don’t let them surround you!

🧩 Exciting Puzzle Mechanics: Solve puzzles and face thrilling challenges while keeping your defense strong.

✨ Stunning Graphics & Engaging Action: Immerse yourself in beautifully designed environments with smooth, fast-paced gameplay.

Only a true guardian can withstand the chaos threatening your fortress. In this war-torn world, where legions clash and zombies multiply, your fort is your last hope. Rally your legions, master the art of the puzzle, and fight for survival. Your every move in this castle defense game determines whether you rise as a legend or fall into ruin.

This is not just another zombie defense game — this is where puzzle, combat, and tactics collide. Download now and become the legend who defends the last stronghold in a world at war. Prove your worth in one of the most thrilling roguelike and battle strategy games of our time.

Merge. Defend. Conquer. Only in Fortress Merge: Puzzle Defense.
Updated on
Sep 9, 2025
Available on
Android, Windows*
*Powered by Intel® technology

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
Location, Financial info and 2 others
This app may collect these data types
Location, Financial info and 3 others
Data isn’t encrypted
Data can’t be deleted

Ratings and reviews

4.2
17.5K reviews
Devin Brenly
September 4, 2025
not bad over all. the only complaints are that there should be a way to rotate buildings, a lot of time trees and buildings get in the way and a building that could be used gets wasted, and sometimes ads don't give the proper rewards. I've also noticed that the heros armor buffs don't seem to work, multiple armor pieces say they heal the hero at the end of the round and they just don't. but other than that the game is at least like the ads and plays well.
2 people found this review helpful
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Ripple Effect MLP
July 23, 2025
It's a good game overall. Initial layouts keep levels from being repetitive, so it gives your brain more to think about what to place where. My only real negative is that the game sometimes crashes and makes me replay a level from Wave 1; if I have to do that when I was at Wave 7 or higher, it's disheartening.
36 people found this review helpful
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TapNation
July 23, 2025
Dear Ripple, please check out the new version of the game, released by the end of this week, you might like the easier balancing, new content and consider a few more stars, it means a lot to us :)
Mike Soriano-Jenkins
August 21, 2025
This game is pretty fun! The puzzle aspect, low risk nature, art, and theme makes it very enjoyable. Great game. NOW: I've been playing for about 2 days now and I've noticed that the devs hide ads within power ups between rounds. NOT hiding the power up behind an ad, but there being no indication that they'll be an ad if you click this. VERY shady tactics. Sad to say but I'm on the fence and about to uninstall.
7 people found this review helpful
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What’s new

- Upgraded menus
- New levels balancing
- Shop reworked
- Prices in local currency
- Bugs fixed (skill tree, sounds, heroes, buildings)