Best Monster Defense Apps & Games

242+ iOS apps & games curated and reviewed

4.3 avg rating
20 free apps & games
Updated September 2026

Whether you're new to monster defense or looking for an upgrade, our curated collection of 242+ iOS apps and games has something for everyone. Each app is reviewed and rated by real users, helping you make an informed decision.

Compare top Monster Defense Apps & Games (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Summoners Greed: Idle Hero RPGSummoners Greed: Idle Hero RPGFree4.9★ (128K)YesYesSep 2026
2Merge Plants - Monster DefenseMerge Plants - Monster DefenseFree4.4★ (2.1K)YesYesSep 2026
3Idle Monster TD: Tower DefenseIdle Monster TD: Tower DefenseFree4.7★ (819)YesYesSep 2026
4Monster TD : Treasure DefenseMonster TD : Treasure DefenseFree3.0★ (2)NoYesMay 2026
5Camp DefenseCamp DefenseFree4.7★ (2.1K)YesYesAug 2026
6Kingdom Rush Tower Defense TDKingdom Rush Tower Defense TDFree4.8★ (76K)YesYesSep 2026
7Monster Shoot: Tower DefenseMonster Shoot: Tower DefenseFree5.0★ (1)YesNoMay 2026
8Monster House - Horror DefenseMonster House - Horror DefenseFree4.8★ (26K)YesYesSep 2026

Top Picks for Monster Defense

Summoners Greed: Idle Hero RPG#1

Summoners Greed: Idle Hero RPG by PIXIO LIMITED

Ultimate Hero Battles
Editor's Choice
🎮 Games
4.9😊(128K ratings)
FreeAdsIn-App Purchases
Summoners Greed: Idle Hero RPG screenshot 1
Summoners Greed: Idle Hero RPG screenshot 2
Summoners Greed: Idle Hero RPG screenshot 3
Summoners Greed: Idle Hero RPG screenshot 4
Summoners Greed: Idle Hero RPG screenshot 5
Summoners Greed: Idle Hero RPG screenshot 6

Defend your stolen treasure from an invading army of heroes in this idle tower defense game. Summon a variety of monsters and cast powerful spells to obliterate your enemies. Strategically place towers and upgrade your defenses to survive endless waves.

What We Love

  • 🚀 Addictive and fun gameplay
  • 👍 Charming and unique visuals
  • 🔓 No forced ads or in-app purchases
  • 💰 Generous rewards for idle playtime
  • 🤖 Satisfying monster collection and upgrading

Room to Improve

  • 🐢 Slow progression and wave clearing
  • 🔁 Repetitive gameplay and lack of variety
  • 🤕 Difficulty spikes can feel unfair
  • 🔀 Inability to rearrange tower placement
  • 🤷‍♂️ Unclear mechanics and abilities
Merge Plants - Monster Defense#2

Merge Plants - Monster Defense by ABI GLOBAL LTD.

Grow plants to attack Zombies
Strong Contender
🎮 Games
4.4😞(2.1K ratings)
FreeAdsIn-App Purchases
Merge Plants - Monster Defense screenshot 1
Merge Plants - Monster Defense screenshot 2
Merge Plants - Monster Defense screenshot 3
Merge Plants - Monster Defense screenshot 4
Merge Plants - Monster Defense screenshot 5

Grow and merge powerful plants to defend your garden from waves of attacking zombies. Strategically place your plants, upgrade their abilities, and unleash their attacks to stop the monster invasion before they reach your house. This idle game allows for progress even when you're not actively playing.

What We Love

  • 🚀 Fast gameplay
  • 👍 Addictive and fun
  • 💡 Unique merge mechanic

Room to Improve

  • 🔥 Excessive ads
  • 🐛 Glitches and bugs
  • 👎 Repetitive plants and zombies
  • 🔒 No offline play
Idle Monster TD: Tower Defense#3

Idle Monster TD: Tower Defense by Monstermob Usa, INC.

Evolve Epic Monsters and Fight
Worth Considering
🎮 Games
4.7😞(819 ratings)
FreeAdsIn-App Purchases
Idle Monster TD: Tower Defense screenshot 1
Idle Monster TD: Tower Defense screenshot 2
Idle Monster TD: Tower Defense screenshot 3
Idle Monster TD: Tower Defense screenshot 4
Idle Monster TD: Tower Defense screenshot 5
Idle Monster TD: Tower Defense screenshot 6

Build a team of evolving monsters to defend your portal from endless waves of human invaders. Strategize monster placement and utilize powerful abilities in this idle tower defense RPG. Collect resources, unlock new creatures, and compete in PvP tournaments.

What We Love

  • 🚀 Good game mechanics
  • 👍 Easy to understand
  • 👍 Enjoyable gameplay
  • 👍 Decent graphics
  • 👍 Rewards active and idle play

Room to Improve

  • 🐛 Tournaments no longer running
  • 🐛 Connectivity issues
  • 🐛 Losing progress/save data
  • 💰 Expensive in-app purchases
  • 🔍 Lack of updates and developer support

More Monster Defense apps to explore

FAQ about Monster Defense

What are the best monster defense apps & games for iPhone?
Summoners Greed: Idle Hero RPG tops our monster defense apps & games ranking as of September 2026, with a 4.9-star average from 128K App Store ratings, and it's free to download.
Yes — 20 of the top monster defense apps & games we rank are free to download, including Summoners Greed: Idle Hero RPG and Merge Plants - Monster Defense.
Summoners Greed: Idle Hero RPG shows ads and offers in-app purchases, according to its App Store listing as of September 2026.
We track 242+ monster defense apps & games on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
Summoner's Greed is an idle tower defense game where players take on the role of a summoner defending stolen treasure. You strategically place towers, summon monsters, and cast spells to fend off waves of heroes sent by the King.
Key features include summoning dozens of unique monsters and towers, defending against endless waves of heroes and bosses, upgrading your defenses and spells, and collecting various rarities of monsters. Each monster and hero has distinct abilities.

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