Tank Fortress: Idle Merge TD

Contains adsIn-app purchases
Content rating
PEGI 16
50K+
Downloads
Content rating
PEGI 16
Moderate Violence
In-Game Purchases (Includes Random Items)
Learn more
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About this game

When machines rise, only steel stands between humanity and extinction. Build your mobile fortress, merge powerful turrets, and lead a high-fidelity tactical struggle for survival in the ultimate IDLE RPG TOWER DEFENSE.

The world is overrun by rogue machines. As the last commander, you must rebuild your forces, upgrade your mobile fortress slots, and engage in POST-APOCALYPTIC SURVIVAL across deserts, jungles, and frozen ruins.

🏗️ BASE-BUILDING & UPGRADE
Expand your mobile fortress, unlock new turret slots, and merge powerful weapons to evolve your firepower. Experience the satisfying progression of a HYBRID IDLE TD where your fortress grows even while you’re away.

⚙️ TACTICAL SYNERGY & STRATEGY
Combine different turrets, tech, and commander skills to outplay endless enemy waves. Master REAL-TIME PATHFINDING and adaptive difficulty systems that challenge your turret placement at every turn.

💥 PVP & GLOBAL RANKING
Enter the arena for real-time online battles. Seize resources from rivals, climb the global leaderboard, and prove your tactical dominance in COMPETITIVE RANKING events.

🧠 ADVANCED IDLE MERGE SYSTEM
The fight never stops. Your fortress features an AUTO-BATTLER DEFENSE that merges turrets and gathers rewards offline. Return stronger, unlock new slots, and conquer the machine swarm.

🔥 TOP FEATURES:
• Merge Turrets: Unlock unique turret tiers with deep weapon progression.
• Expand Fortress: Upgrade your vehicle to hold more powerful turrets.
• Hybrid Monetization: Enjoy a fair experience with balanced rewards.
• Offline Progress: Claim idle rewards and turret merges even without WIFI.
• Console-Quality Visuals: Stunning effects and explosive combat optimized for 2026.

Humanity’s last hope is in your hands.
MERGE. BUILD. CONQUER.
Build the ultimate mobile fortress. Merge turrets and survive the ruins!
Updated on
Oct 3, 2026
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 and Device or other IDs
  • This app may collect these data types
    Location, Personal info and 4 others
  • Data isn’t encrypted
  • You can request that data be deleted

What’s new

• New Titan: Insect Queen
• Anniversary event starts Oct 1 and lasts one month
• Party Carnival
• Double dungeon rewards
• Limited-time 30% off in-game packs
• Discount packs now include selectable Titans and Pilots
Content rating
PEGI 16
Moderate Violence
In-Game Purchases (Includes Random Items)
Learn more

App support

About the developer
BOXI Interactive Corporation
interactiveboxi@gmail.com
2485 Huntington Dr San Marino, CA 91108-2622 United States
+1 213-423-3316

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