Tank Fortress: Idle Merge TD

Merge, Build and Fire!

Only for iPhone

Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.

iPhone

CELEBRATING 1 YEAR OF TANK FORTRESS! Join millions of defenders for our massive anniversary gala. The battlefield has evolved — are you ready? 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.

  • 4.7
    out of 5
    255 Ratings

ANNIVERSARY EXCLUSIVES • Limited-Time Events: Log in now for exclusive anniversary rewards and gala-only game modes • 3 New Titans: Unleash the power of three legendary new Titans to crush your enemies • 3 Elite Pilots: Recruit three exclusive new pilots with game-changing tactical skills • The "Dream Type I" Tank: Deploy our latest mobile fortress unit—the ultimate blend of speed and firepower. TACTICAL FREEDOM • Enhancement Reset: Strategic flexibility is here! Reset your Turrets and Titans to reclaim resources and refine your build PERFORMANCE & POLISH • Optimized Performance: We've shrunk the app size for faster downloads and smoother gameplay • Bug Fixes: Resolved the World Boss damage calculation issue and other known glitches for a flawless experience.

The developer, BOXI Interactive Corporation, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Used to Track You

    The following data may be used to track you across apps and websites owned by other companies:

    • Location
  • Data Linked to You

    The following data may be collected and linked to your identity:

    • Location
    • User Content
    • Identifiers
    • Usage Data
  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Usage Data
    • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

The developer has not yet indicated which accessibility features this app supports. Learn More

Seller
BOXI INTERACTIVE CORPORATION
Size
644.5 MB
Category
Casual
Compatibility
Requires iOS 15.6 or later.
  • iPhone
    Requires iOS 15.6 or later.
  • iPod touch
    Requires iOS 15.6 or later.
  • Mac
    Requires macOS 12.5 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Languages
English and 2 more
  • English, Simplified Chinese, Traditional Chinese
Age Rating
16+
  • 16+
  • Frequent
    Cartoon or Fantasy Violence
    Guns or Other Weapons

    Infrequent
    Contests

    Contains
    Unrestricted Web Access
    Loot Boxes
    Advertising
    Messaging and Chat
    User-Generated Content
In-App Purchases
Yes
  • Remove AD Forever $4.99
  • 0.99 pack $0.99
  • Tower Target Level Gift1 $2.99
  • Permanent Card $5.99
  • [Dawn] Frost Ray $0.99
  • Battle Pass $9.99
  • [Gaia] Engineering Tower $0.99
  • Fortress Skill Card $7.99
  • Safe Pack1 $2.99
  • [Ifrit] Fireball Cannon $1.99
Copyright
© FAST RUN (SINGAPORE) PTE.LTD.