Defense Legend 4: Sci-Fi TD – Nguyen Hieu

Last updated on December 16th, 2025 at 10:36 am

Defense Legend 4: Sci-Fi TD – Entertainment Game Review

Defense Legend 4: Sci-Fi TD Screenshot

Defense Legend 4: Sci-Fi TD is a Entertainment/Action/Strategy game from Nguyen Hieu, first launched in 12th October 2021.
It’s rated 9+ and currently has 82+ ratings on the App Store.

What Makes Defense Legend 4: Sci-Fi TD Stand Out

  • BRIFT STORY:
    In this part, the war between the Human and the Dark moved to a fierce new phase. In previous parts, Human found out the way to stop and defeat The Dark’s attacks. However, the Dark having cunning schemes always changes and develops after each of their failures. Battle in Defense Legend 4 is a maximum challenge for the followers of Defense Legend.
    The Dark will send a large and powerful army to attack fully to our strategic bases. They attack from all sides from the air, land and underground… Besides extremely modern weapons, the Dark also uses magic enhancing their strength to destroy Human’ bases.
  • FUNCTIONS:
    Defense Legend 4 requests players to focus highly and give good strategies to defeat the Dark’s troops

    • Two heroes fight directly. Players are supported fully from the superhero team equipped more modernly.
    • Upgrade strongly cannons, develop special skills.
    • Various territories such as deserts and forests and iced lands. Each kind of territories gives different challenges.
    • Various strategies such as air forces, land and underground…
    • A lot of modes

This Entertainment game offers engaging gameplay and regular updates for mobile players.

Player Feedback

As a newer release, Defense Legend 4: Sci-Fi TD is building its player community. Early feedback suggests .

Recent Updates & Development

Latest Update: 9th January 2025

Recent improvements include:
Graphics optimization

Download & Availability

Defense Legend 4: Sci-Fi TD is available through the official App Store for iOS devices.

Get Defense Legend 4: Sci-Fi TD on App Store

Requirements: Requires iPhone 5s / iPad Air / iPad Air (Cellular) / iPad Mini 2 (Retina) / iPad Mini 2 (Retina, Cellular) / iPhone 6 / iPhone 6 Plus / iPad Air 2 / iPad Air 2 (Cellular) / iPad Mini 3 or later.

Compatible with iPhone and iPad devices.

Player Experience Highlights

Community Insight:

If you like tower defense games, we would say its definitely worthwhile to check this game out. Good graphics, pretty good sound, and a lot of action.


We were able to get through the first few levels without having to spend money. A lot going on in this game.


As a TD game, its pretty good. There is a decent variation of maps and it requires active strategy to pass certain levels. Forced ads for certain things, but they are short not those 60 second ones. Only gripe is at some point you'll need to get better ships or towers to progress, but the IAPs are pretty pricy, spending $30+ on any game for not even the full set of unlocks is pretty ridiculous.


Hope the difficulty graduates smoothly, without sudden extremes.


Its alright the only bad thing is all the ads they need to come out with some more games.


We like the game play. Very addicting game to play.


We really like this game a lot but it seems like once you get to around level 35 is when you gotta start spending $$$ or quit. The star requirement starts getting ridiculous and you have to almost be perfect with 3 stars in each hardness in every level to keep advancing. Im not dropping a ton of money to keep advancing so Ill be cutting back until something changes. We dont mind spending a few bucks here and there but almost nothing in this game is just a few bucks.


Enjoy the game very much but like most games we hate how they force you to go to tutorial but other than that so far no issues and we plan to keep playing.


Game crashes all the time and has a ad that pops up that you cant get out of even after restarting the game great game just buggy.


Good game , after few levels it stuck and doesnt work.


We love this game you cant play now. We were at level 45 and thought oh Ill uninstall and that will get rid of this stuck ad, nope. Now Ive lost all progress and still cant play.


Game was better than your average defense game until they added a ad pop up for one of their other games. No way to get past the ad. The box wont close and the link it wants you to use wont work either. Swing and a miss.


Ads are great, arent they. A good portion of the gameplay is spent watching ads. Which is doable except when the game is no longer playable. Heres a quick horror story. A game ad came on right before the main menu and its stuck, front and center. We cant close it or tap anywhere to make it go away. We tried uninstalling, resetting, and punching ourselves on the face in frustration, but nothing works. It just sits there, haunting us, reminding us of the fun we used to have when we were kicking tower defense rear end. Its truly a fun game with good graphics but ads said nope, not today! Or ever. Our motto is if it aint broke, dont fix it. Well this game is very broken in dire need of fixin.


Fun game but after level 2 an ad popped up and you cant close it even after closing the game completely. We hope they fix it.


You can play a few rounds but it gets all stuck on a developers add about their other games. The little pop up recommending this developers other games cannot ever be dismissed. Tap, and smack it on the X r even Play Game button all you want but it never moves and makes this game totally unplayable. So dont spend a dime or youll get stuck.


Fun game, but difficulty and resources are set so that around levels 18 and 19 you effectively need to start spending money to win. Not a big deal, but important to know before you get invested.
User feedback from Apple App Store


App Details

  • Version: 1.0.112
  • Size: 266.32 MB
  • iOS: 12.0 or later
  • Languages: EN
  • Content Advisory: Infrequent/Mild Cartoon or Fantasy Violence
  • Developer: Nguyen Hieu

Last updated: 9th January 2025 | Genre: Entertainment, Action | Developer: Nguyen Hieu

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