Best Idle Td Game

0+ iOS apps & games curated and reviewed

4.6 avg rating
20 free apps & games
Updated June 2026

Whether you're new to idle td game or looking for an upgrade, our curated collection of 0+ 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 Idle Td Game (June 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Slime Castle: Idle TD RTS GameSlime Castle: Idle TD RTS GameFree4.9★ (8.5K)YesYesAug 2026
2Idle Monster TDIdle Monster TDFree4.7★ (2.6K)YesYesAug 2026
3Summoners Greed: Idle Hero RPGSummoners Greed: Idle Hero RPGFree4.9★ (128K)YesYesAug 2026
4The Tower - Idle Tower DefenseThe Tower - Idle Tower DefenseFree4.2★ (20K)YesYesAug 2026
5Tiny Warriors Rush - Idle TDTiny Warriors Rush - Idle TDFree4.6★ (3.8K)YesYesAug 2026
6Idle Hero TD Tower Defense RPGIdle Hero TD Tower Defense RPGFree4.8★ (1K)YesYesAug 2026
7Dice vs Monsters: Roguelike TDDice vs Monsters: Roguelike TDFree4.4★ (11K)YesYesAug 2026
8Idle Defense: Dark ForestIdle Defense: Dark ForestFree4.6★ (2.5K)NoYesAug 2026

Top Picks for Idle Td Game

Slime Castle: Idle TD RTS Game#1

Slime Castle: Idle TD RTS Game by Azur Interactive Games Limited

Defend the kingdom from mobs!
Editor's Choice
🎮 Games
4.9😐(8.5K ratings)
FreeAdsIn-App Purchases
Slime Castle: Idle TD RTS Game screenshot 1
Slime Castle: Idle TD RTS Game screenshot 2
Slime Castle: Idle TD RTS Game screenshot 3
Slime Castle: Idle TD RTS Game screenshot 4
Slime Castle: Idle TD RTS Game screenshot 5
Slime Castle: Idle TD RTS Game screenshot 6

Defend a magical forest from invading humans in this idle tower defense RPG. Enhance your slime hero's abilities, collect legendary gear, and utilize powerful skills to defeat waves of enemies. Rebuild and strategize to protect the slime kingdoms.

What We Love

  • 🚀 Fun and addictive gameplay
  • 👍 No forced ads
  • 🚀 Decent progression system
  • 🚀 Satisfying upgrade mechanics

Room to Improve

  • 💰 Predatory in-app purchases
  • 🐛 Progression walls and difficulty spikes
  • 🐛 Inconsistent update rollouts
Idle Monster TD#2

Idle Monster TD by Swell Games LLC

Battle endless evil robots!
Strong Contender
🎮 Games
4.7😊(2.6K ratings)
FreeAdsIn-App Purchases
Idle Monster TD screenshot 1
Idle Monster TD screenshot 2
Idle Monster TD screenshot 3
Idle Monster TD screenshot 4
Idle Monster TD screenshot 5
Idle Monster TD screenshot 6

Defend your monster homeland from invading robots in this unique tower defense game. Strategically deploy a variety of monsters with unique skills and elements to stop the mechanical onslaught. Upgrade your defenses and unlock new creatures as you progress through endless waves of enemies.

What We Love

  • 🚀 Great game
  • 👍 Addictive gameplay
  • 🎨 Cute art style
  • 💰 Free-to-play friendly

Room to Improve

  • 💰 Expensive in-app purchases
  • 🐢 Slow progression at higher levels
  • 🔋 Requires constant screen time
Summoners Greed: Idle Hero RPG#3

Summoners Greed: Idle Hero RPG by PIXIO LIMITED

Ultimate Hero Battles
Worth Considering
🎮 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

Room to Improve

  • 🐢 Slow progression and wave clearing
  • 🔁 Repetitive gameplay and lack of variety
  • 🤕 Difficulty spikes can feel unfair

More Idle Td Game apps to explore

4
The Tower - Idle Tower Defense
The Tower - Idle Tower Defense
The Tower - Idle Tower Defense
Base defense, kill the enemy
Free

Build and upgrade a single tower to defend against waves of enemies in this incremental tower defense game. Make permanent upgrades, unlock new areas, and compete in tournaments. Enjoy addictive gameplay with a vast array of strategic choices.

Build and upgrade a single towerDefend against enemy wavesPermanent upgrades and research
🎮 Games
(20K)
free with in-app purchases
5
Tiny Warriors Rush - Idle TD
Tiny Warriors Rush - Idle TD
Tiny Warriors Rush - Idle TD
Defend castle against waves
Free

Engage in a casual tower defense game with roguelike elements. Strategize by choosing warriors, upgrades, and bonuses to defend your castle against zombie hordes. Enjoy endless replayability with no penalties for losing and a focus on strategic customization.

Tower defense gameplayIdle roguelike elementsWarrior and upgrade selection
🎮 Games
(3.8K)
free with in-app purchases
6
Idle Hero TD Tower Defense RPG
Idle Hero TD Tower Defense RPG
Idle Hero TD Tower Defense RPG
AFK Strategy, Offline Progress
Free

Assemble a team of heroes to build an unstoppable defense against monster waves. This game blends idle strategy, tower defense, and fantasy RPG elements, allowing your heroes to fight and grow even while offline. Experiment with hero synergies and upgrades for deep strategic progression.

Idle tower defense gameplayHero recruitment and upgradesStrategic team building
🎮 Games
(1K)
free with in-app purchases
7
Dice vs Monsters: Roguelike TD
Dice vs Monsters: Roguelike TD
Dice vs Monsters: Roguelike TD
Tower Defense action awaits!
Free

Engage in a strategic tower defense battle blending dice mechanics and idle hero management. Assemble a team of unique heroes, each represented by a die, and utilize their special abilities to defend your kingdom against waves of monsters. Experience a roguelike adventure where strategy and luck determine your survival.

Strategic Tower DefenseIdle Hero ManagementDice Rolling Mechanics
🎮 Games
(11K)
free with in-app purchases
8
Idle Defense: Dark Forest
Idle Defense: Dark Forest
Idle Defense: Dark Forest
TD Strategy Game
Free

A young wizard, banished for a mistake, must defend his home from monsters unleashed by a shattered seal. Utilize a variety of towers, elemental skills, and ancient demons to protect the world from chaos.

10+ tower typesTower upgrades and evolutionElemental skills
🎮 Games
(2.5K)
free with in-app purchases
9
Planet Defense: Space TD game
Planet Defense: Space TD game
Planet Defense: Space TD game
Galactic TD Strategy
Free

Defend your home planet in this roguelike tower defense game. Build and upgrade defenses to fend off alien invaders. Experience deep strategy with unique playthroughs and unlockable sentinels.

Roguelike progression with randomized upgradesStrategic depth with unlockable sentinelsStunning visuals and atmospheric sound
🎮 Games
(2.5K)
free with in-app purchases
10
Eternal Cannon Idle Shooting
Eternal Cannon Idle Shooting
Eternal Cannon Idle Shooting
A Casual Tower Defense Game
Free

Defend your city by strategically upgrading cannons and walls. Unleash powerful skills and combinations to defeat waves of enemies in this engaging idle tower defense game. Compete with players worldwide in real-time rankings.

Dozens of upgrade projects with unique skillsUpgradeable walls with damage reflectionTransformable cannon with multiple firing modes
🎮 Games
(4.8K)
free with in-app purchases
11
Boom Castle: Tower Defense TD
Boom Castle: Tower Defense TD
Boom Castle: Tower Defense TD
Idle Tower Defense TD Survival
Free

Defend your castle against endless waves of enemies in this roguelike idle tower defense game. Assemble heroes, strategically place towers and traps, and upgrade your defenses to survive brutal hordes. Master tactical gameplay and unleash devastating abilities to protect your stronghold.

Roguelike idle tower defenseAssemble and upgrade diverse heroesStrategic tower and trap placement
🎮 Games
(8.6K)
free with in-app purchases
12
Idle Cannon: Tower TD Geometry
Idle Cannon: Tower TD Geometry
Idle Cannon: Tower TD Geometry
Idle Tower Defense RPG Games
Free

Engage in a strategic tower defense RPG experience with idle and gacha mechanics. Build defenses, collect and upgrade heroes, and conquer challenging levels at your own pace. This game offers a deep tactical challenge for fans of simulation and strategy.

Idle gameplay mechanicsGacha hero collection and upgradesStrategic tower defense
🎮 Games
(10)
free with in-app purchases
13
Harvest King: Farm Defense TD
Harvest King: Farm Defense TD
Harvest King: Farm Defense TD
Merge Veggies & Idle Strategy
Free

Build and defend your farm in this strategic game. Manage resources, deploy a dynamic sprinkler system, and face challenging enemy waves. Upgrade your defenses and reroll for powerful builds to become the ultimate Harvest King.

Strategic crop placementResource managementDynamic sprinkler system
🎮 Games
(947)
free with in-app purchases
14
Idle Hero TD
Idle Hero TD
Idle Hero TD
Battle endless evil monsters!
Free

Command a team of heroes in this fantasy tower defense game to stop monsters from reaching the treasure. Earn resources by defeating foes, then tap to upgrade your heroes and place them strategically. Enjoy idle gameplay with offline gold earnings and engage in PvP tournaments.

Epic Tower Defense battlesIdle TD gameplay with clicker mechanicsOffline gold earnings
🎮 Games
(1.2K)
free with in-app purchases
15
Idle Defense Octopus Evolution
Idle Defense Octopus Evolution
Idle Defense Octopus Evolution
Mutant Monster Defence Games
Free

Evolve a mutant octopus by collecting DNA and gems to unlock new arms and super weapons. Defend against enemies with easy-to-learn touch controls and enjoy cartoon graphics with rock music. Share your progress and discover new features in this unique tower defense experience.

Evolve mutant octopus with new arms and weaponsEasy touch-and-hold gameplayCartoon graphics and rock music
🎮 Games
(1.9K)
free with in-app purchases
16
Idle Heroes - Idle Games
Idle Heroes - Idle Games
Idle Heroes - Idle Games
Play Different, Go Idle!
Free

Assemble and train a powerful squad of heroes in this idle RPG. Your heroes train automatically while you're away, gaining new abilities and becoming stronger. Explore dungeons, battle darkness, and compete in global arenas and guild wars.

Idle hero trainingHero collection and evolutionStrategic team building
🎮 Games
(107K)
free with in-app purchases
17
Revolution Idle
Revolution Idle
Revolution Idle
Will you reach infinity?
Free

This idle game challenges players to multiply numbers and reach infinite heights by filling circles. Unlock new mechanics, boost multipliers, and automate actions for optimized progress. Compete with others on the leaderboard and earn achievements.

Multipliers and PrestigeReach Infinity and EternityAutomate actions
🎮 Games
(18K)
free with in-app purchases
18
Evil Tower - Idle Defense TD
Evil Tower - Idle Defense TD
Evil Tower - Idle Defense TD
Be the lord of the strategy
Free

Defend your fortress as a wizard lord in this idle tower defense game. Strategize to survive enemy waves, upgrade your tower, and build a unique empire with roguelike decisions and incremental progression. Enjoy epic offline battles and unleash special powers.

Strategic defense against enemy wavesTower upgrades and customizationRoguelike decision-making
🎮 Games
(124)
free with in-app purchases
19
Dragon Fever TD
Dragon Fever TD
Dragon Fever TD
Roguelike Casual TD Game
Free

Lead your squad to defend against endless monster waves and a mighty dragon in this roguelike tower defense game. Assemble a hero squad with unique abilities, strategically position them, and combine random skills for unique battle styles. Earn resources offline for easy, fast-paced gameplay.

Roguelike upgrades and random skillsAssemble and position hero squadsFast-paced tower defense action
🎮 Games
(957)
free with in-app purchases
20
Balls Defense - Idle TD
Balls Defense - Idle TD
Balls Defense - Idle TD
Incremental Tower Defense Game
Free

An incremental tower defense game that blends multiple genres for intense gameplay. Enjoy endless challenges with upgrades and boosts, all playable offline without ads.

Incremental tower defense gameplayGenre-blending mechanicsEndless gameplay
🎮 Games
(51)
free

FAQ about Idle Td Game

What is the best idle td game for iPhone?
Slime Castle: Idle TD RTS Game tops our idle td game ranking as of June 2026, with a 4.9-star average from 8.5K App Store ratings, and it's free to download.
Yes — 20 of the top idle td game we rank are free to download, including Slime Castle: Idle TD RTS Game and Idle Monster TD.
Slime Castle: Idle TD RTS Game shows ads and offers in-app purchases, according to its App Store listing as of June 2026.
Slime Castle is a role-playing idle tower defense game where players defend a mysterious forest from invading humans. You play as a slime hero, enhancing abilities, collecting equipment, and using skills to defeat enemies.
Key features include an auto-battle idle clicker system, diverse maps and enemies with unique skills, a flexible upgrade system for building your fortress, equipment collection, and strategic combinations of fortress, equipment, and enemy control.