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 2.4.3

New skin added! During the Lunar New Year, purchase a special bundle for the price of a Barrel of Gems and get the Lunar New Year Fee skin for free!

Ratings and Reviews

4.7 out of 5
7.5K Ratings

7.5K Ratings

Lord Brandon (house of Povey) ,

Realm Defense

Hello everyone, I’m just gonna write a few reason I think Realm Defense is the best tower defense game out there. Your standard tower defense games are just the same thing over and over. In Realm Defense you Gabe hero’s you can unlock and buy and level them up to Increase there stats and special attacks. There a multitude of mini games to be played as well, which allows us users to earn power items or ether or unlock stronger hero’s. You have arcade mode and endless mode which is a good way to earn free power ups by using your raid cards you automatically get the highest level for the world that you’ve completed. The developers are very friendly and very fast on response time when I contact them. I’ve always won free gems a few times by just share Realm Defense Facebook post. Just share there post and keep a look out for other free give aways. And it only cost you one share of Realm Defense Facebook post, so you can’t beat that, easy free money boys. An to the developer’s who have worked countless days an night to make this game the best it can an I thank you all, Everyone who had anything to do with this game should be very proud of themselves. An I would just like to say thank to your whole team from developers to graphic design team to the coders, Artists/Visual’s, an the customer support team you all were a huge help in getting me my gems I win. Keep up the great work and remember stay a team an this game will take your company to the next level.

thegrinkel ,

One of the Best FTP Tower Defense Games

I have played this game for a while on and off, but recently picked it back up again and have played it for near 3-4 months in a row, and I can say that this game is one of the best ones out there. No annoying popups for micro transactions, so spending feels more supportive of the game rather than because you have to, and the game makes you have to progress and farm. You get to unlock heroes as you progress through the campaign in which you have to save up gems for, a currency you get through the campaign as well as the tournament and other modes. As well as unlocking heroes, you get to rank them up to unlock more power, making all your heroes even stronger. This game takes a while to rank everyone up and hit the top of tournament, but it’s fun at any point of the game. New content is released every few months and there are events that you can participate in to unlock new skins and heroes which is cool. The community for the game is also enjoyable as everyone is helpful and can provide insight in playing the game and what to do. A new world will also be coming soon so play the game now!!

Like any game, there are it’s downsides, like some heroes are too weak while others dominate and content can feel slow once you got through all there is at the moment. But any game has its moments of not being the best.

god him selffff ,

Very fun buuuuut...(minor rant)

I rated this 5 stars because I enjoy playing this game very much and I see no huge flaws yet. The only thing that I think needs buffing is the elixir mine(s). I think that it should generate way quicker. It would be helpful if it generated quicker so I could level up my hero’s faster. Whilst on the topic of hero’s, I need to complain a little about the rate you gain cards for your hero’s to level up(the non elixir route aka the grind route). I’m only just starting out so I don’t know if this changes later in the game but, you gain like 1-15 cards for year hero’s to level per 3 star win. It sounds like a lot at first but when you need thousands it’s nothing. I think they should buff this rate too. Not too much but maybe like 30-45 cards for hero’s per 3 star win. Once again, I don’t know for sure if this changes post-game. Other than those minor things this game is very fun and addictive. Personally I really like how the more stars you get the more you can upgrade your towers. Anyways, this game is very unique, fun, and all around enjoyable to play. I recommend this game 10/10!!!


Babeltime Inc. US
251.7 MB

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


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

Age Rating
Infrequent/Mild Cartoon or Fantasy Violence
In-App Purchases
  1. Handful of Gems $0.99
  2. Pile of Gems $2.99
  3. Bag of Gems $4.99


  • 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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