Calling all strategic tower defenders! Are you a fan of epic online tower defense games? Download now to join fantasy heroes like Smoulder the Dragon and many others in their ongoing quest to defend the realm!

Will you help our heroes save the turrets and towers from invasion? Do you have what it takes to engage in realm defense?

This real-time kingdom rush castle defense game needs your help to battle and conquer! We need your skills to defend the tower – The Allied Kingdoms have one choice in this TD game: defend, defend, defend! Battle with Death Knights and fight alongside dragons, wizards, ice queens, knights and other ancient gods in our magical fantasy adventure field! You can acquire gems, potions, elixir, and even spells while working your way up to become a champion and hero! Are you ready to save the kingdom and be the best realm grinder out there?

Realm Defense is an ultimate tower kingdom defense game that challenges skilled players like you!
Use our huge variety of powers and abilities to overcome obstacles in over 300 levels. By being a part of our kingdom rush frontier, you will travel through lush forests, snow covered mountains, and epic deserts as you use YOUR strategy to face off against enemies! The opportunities are endless – YOU will oversee the building a heroic team, discovering secret challenges, and upgrading your towers!
Deploy rapid-fire archers! Carve walls on the map with magic beams! Fire roaring cannons! Summon allies! Realm Defense offers variety and challenge. Overcome incredible odds with strategy and wit! Rescue helpless villagers, collect important resources, and recruit legendary heroes with deadly abilities along the way to stop evil in this standout tower defense game.

• 300+ levels with various game play modes
• Multiple worlds and realms to play with – Each having four different towers
• Compete in tournaments to display your tower defense skills and win big prizes
• Powerful heroes with unique abilities to aid you: Fee the Archer launches a deadly Kill Shot, Lancelot the Knight unleashes the Fist of Justice, Smoulder the Dragon rains down Heat Seeker fireballs and many more
• Face off against epic bosses including a Skeleton Mage that rides a giant slime and zaps your heroes and a bomb tossing, mammoth riding Goblin King, and smolder your enemies to victory
• Huge variety of enemies offer multiple challenges: Burn your enemy, freeze them, and more with 4 spells to cast in battle
• Beautiful landscapes and character animations
• One of the best tower defense games free on the App Store
• Fun strategy games and royal challenges

PLEASE NOTE! This online game is free to play and made by people who love tower defense games. We sincerely hope you enjoy our work!

What’s New

Version 2.2.6

- New Epic Skins for Sethos, Masamune, and Obsidian are available for purchase with Tournament Coins in the Tournament Shop
- Realm Siege UI has been improved
- Bug Fixes

Ratings and Reviews

4.7 out of 5
5.6K Ratings

5.6K Ratings

dragondawg ,

Best app game I’ve had

This is by far one of my favorite games. I used to be so bored in study hall because eventually the no-internet app games get old. When I started playing this I was surprised by how fast time went by. I play it in my free time too now and love it especially because of the heroes you can get that really add to the tower defense basis. I don’t spend any real money on items or heroes and find that it is still just as fun. If you take the time to work at the levels and level up your heroes, try new strategies, and check the box for what other people suggested then it’s no problem. No money needed. I am a bit over halfway through world 2 so maybe I might change my view on not spending money later on when it gets harder or I have to unlock other worlds but for now I love this game a lot and I still will even if I need to spend some money eventually. You can always get heroes for gems and right now I don’t see them cornering me into buying something with real money which is great. Also it doesn’t inundate me with ads which is another plus. Five stars, no doubt.

jetthepuet ,

Months of EPIC gameplay until world 3!

This is one of the best free tower games! However, everything stops once you reach the end of world 3...this is where I feel the game falls short and becomes a cash cow. 1) it takes forever to earn free gems (30 daily login non stop + extras will earn you 2000+ gems a month with each decent heroes costing 6000+. It will take 3-4months of daily play to buy a medium rank hero). 2) forced to micromanage EVERYTHING what you buy/use early on 3) tournaments are pointless once you reach gold rank since you will be under leveled. You stay idle until you spend gems to upgrade heroes so you can compete with other players who have max heroes. There should be an up/down league ranking system to earn more gems so we can qualify to earn more free gems 4) since you’re underleveled and and can’t finish harder overpowering levels the game will crash consistently. There is ZERO recovery. If you wasted items on a level and game crashes then all items used are lost leaving you in the negative and starting over from beginning 5) The only remedy to all these problems is to buy gems. As a freebie player you’ll need lots of patience, time and Gems so you can level up, unlock or buy better expensive heroes.
This is really a great game with lots of potential but once you reach midway you’re stuck and everything becomes a repetitive grind for free gems.

deadmans2 ,

Very fun game that’s free if you want it to be

Overall as far as good tower defense games go I really enjoy playing this! Although it’s not my favorite type of TD (i prefer ones you build mazes with your towers) Got it when it only had one world and have been playing every now and again since! Never needed to spend any money on it and have all but one hero that was just released and this is a really good game with constant updates and support. The team working on this game has been fantastic and constantly delivered! Only thing I have a complaint about is the balancing of hero’s. There’s really no point to using more than half of the hero’s because the balancing is just really bad (although they are the cheap ones) the new hero’s typically are always better than any old ones even though the abilities are vastly different. They Need to work on how to balance some things so that certain hero’s actually give you a strategy. Why waste time on the awaking tokens for older hero’s? When the new hero’s cost the same amount of gems basically and automatically are better. This is apparent in the tournament mode where you can see everyone in the top 10 uses the same hero set.


Babeltime Inc. US
244.6 MB

Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.


English, Chinese, French, German, Italian, Japanese, Korean, Polish, Portuguese, Russian, Simplified Chinese, Spanish, Traditional Chinese, Turkish, Vietnamese

Age Rating
Rated 9+ for the following:
Infrequent/Mild Cartoon or Fantasy Violence
© 2018 Babeltime Inc
In-App Purchases
  1. Barrel of Gems $9.99
  2. Chest of Gems $19.99
  3. Starter Pack $5.99


  • Game Center

    Challenge friends and check leaderboards and achievements.

  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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