Best Unit Upgrade Game

165+ iOS apps & games curated and reviewed

4.5 avg rating
20 free apps & games
Updated July 2026

The best unit upgrade game on iPhone average 4.5★ across 165+ titles — we've ranked them by what real users actually keep on their phones. Updated July 2026.

Compare top Unit Upgrade Game (July 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Hero Squad: Battle SiegeHero Squad: Battle SiegeFree4.6★ (44K)YesYesSep 2026
2Big Battle 3DBig Battle 3DFree4.6★ (38K)YesYesSep 2026
3Weapon Upgrade RushWeapon Upgrade RushFree4.5★ (942)YesYesSep 2026
4Battle Warship: Naval EmpireBattle Warship: Naval EmpireFree3.9★ (6.4K)NoYesSep 2026
5Rivals at WarRivals at WarFree3.7★ (347)YesYesSep 2026
6Paper WarPaper WarFree4.7★ (2.2K)NoYesSep 2026
7Top War: Battle GameTop War: Battle GameFree4.1★ (103K)YesYesSep 2026
8Mighty BattlesMighty BattlesFree4.7★ (21K)YesYesSep 2026

Top Picks for Unit Upgrade Game

Hero Squad: Battle Siege#1

Hero Squad: Battle Siege by Kwalee Ltd

Survive the endless attack!
Editor's Choice
🎮 Games
4.6😐(44K ratings)
FreeAdsIn-App Purchases
Hero Squad: Battle Siege screenshot 1
Hero Squad: Battle Siege screenshot 2
Hero Squad: Battle Siege screenshot 3
Hero Squad: Battle Siege screenshot 4
Hero Squad: Battle Siege screenshot 5

Assemble a powerful army and customize your heroes to survive relentless monster attacks. Collect resources, upgrade your units, and engage in strategic combat to dominate the battlefield and push your squad to its limits.

What We Love

  • 🚀 Fun game to pass time
  • 👍 Good concept and gameplay
  • 🚀 Simple and easy to learn

Room to Improve

  • 🐛 Frequent crashes and lags
  • 🔋 Game becomes unplayable after extended play
  • 📺 Excessive ads and monetization
  • 🐛 Bugs and glitches after updates
Big Battle 3D#2

Big Battle 3D by Kwalee Ltd

Storm the castle!
Strong Contender
🎮 Games
4.6😞(38K ratings)
FreeAdsIn-App Purchases
Big Battle 3D screenshot 1
Big Battle 3D screenshot 2
Big Battle 3D screenshot 3
Big Battle 3D screenshot 4
Big Battle 3D screenshot 5

Build and upgrade your army to storm castles in this fun and addictive game. Strategize your formations and weapons to defeat opposing armies and conquer increasingly challenging levels.

What We Love

  • 👍 Fun and addictive gameplay
  • 🚀 Simple yet engaging concept

Room to Improve

  • 💸 Excessive ads that disrupt gameplay
  • 🔒 Requires internet connection even for offline play
  • 🐛 Glitches and bugs, especially with larger armies
Weapon Upgrade Rush#3

Weapon Upgrade Rush by Rollic Games

Worth Considering
🎮 Games
4.5😞(942 ratings)
FreeAdsIn-App Purchases
Weapon Upgrade Rush screenshot 1
Weapon Upgrade Rush screenshot 2
Weapon Upgrade Rush screenshot 3
Weapon Upgrade Rush screenshot 4
Weapon Upgrade Rush screenshot 5

Build and upgrade your weapons to prepare for intense boss fights. Earn powerful new armaments as you progress through challenging levels. Test your skills and strategy to emerge victorious.

What We Love

  • 🚀 Fun concept
  • 👍 Good game
  • 💡 More guns needed

Room to Improve

  • 🐛 Glitchy
  • 🔋 Too many ads
  • 🚫 False advertising

More Unit Upgrade Game apps to explore

FAQ about Unit Upgrade Game

What is the best unit upgrade game for iPhone?
Hero Squad: Battle Siege tops our unit upgrade game ranking as of July 2026, with a 4.6-star average from 44K App Store ratings, and it's free to download.
Yes — 20 of the top unit upgrade game we rank are free to download, including Hero Squad: Battle Siege and Big Battle 3D.
Hero Squad: Battle Siege shows ads and offers in-app purchases, according to its App Store listing as of July 2026.
We track 165+ unit upgrade game on the iOS App Store as of July 2026, ranked by rating, recency, and analysis of real user reviews.
Hero Squad: Battle Siege is a game where you assemble and upgrade a strong army to survive endless waves of monster attacks. You'll recruit soldiers, reinforce your troops, and customize your heroes with weapons and costumes to face intense battles.
You can strengthen your army by recruiting new units and upgrading their weapons. Collecting gold, bonuses, and rewards found on the battlefield will also allow you to enhance your heroes and units, making them stronger for combat.