Average Playtime: 2 hours

Radiant Defense

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Radiant Defense is a tower defense game set in a vibrant universe invaded by countless alien hordes.
Build your space fortress any way you wish, set up wide variety of weapons and traps and let the invasions begin!
REROUTE AND REBUILD Use modules to shape the alien route. Bend the path so it always leads enemies toward your cannons and keeps them within the range of your energy weapons for as long as possible.
LET THEM BURN Use Typhon Fury Flamer to set passing enemies on fire and to quickly incinerate large groups of smaller units.
BOMBARD THEM Use Seraphim Missile Launcher to deliver target-seeking ordnance over great distances. Seraphim Missiles explode violently upon contact.
SLICE THROUGH Power Blades cut passing enemies and quickly remove their forceshields. Great at softening up enemy masses and terminating wounded runners.
LIGHT THEM UP Use Brightmark Searchlight to multiply the power of your defenses. Marked targets receive up to 200% damage from other weapons.
ANNIHILATE Target your Omega Cannon at any spot and disintegrate all that's passing through. Combines great with Recuperator and Brightmark Searchlight.
BLOW THEM UP Place Proximity Mines to explode enemy crowds or to damage heavily armored units. Mines can be placed anytime to quickly mend a critical situation.
WATCH THEM TREMBLE Psionic ocular terrifies all enemies, making them easy prey for your weapons. Combines best with superweapons such as the Omega Cannon.
DOUBLE THE PAYBACK Collect twice the money for nearby alien kills with Recuperators. Combines best with area specific weapons, such as Proximity Mines and Omega Cannon.
Radiant Defense Strategy Guide Read more on how to build a strong economy and get the maximum out of your deadly arsenal. Exterminate aliens with ease!Features
More than 300 waves of aliens across 14 missions
9 upgradable weapons to kill the aliens with style
3 superweapons of mass defense
Steam Leaderboards and Achievements
Use Alt+Enter to switch between Fullscreen and Windowed modeSupport and Feedback
Please contact [email protected] with any inquiry or feedback.
Follow @hexage for the latest development updates and news.

Release date
David Peroutka
Hexage, David Peroutka
Age rating
Not rated

System requirements for macOS

System requirements for PC

  • OS: Windows 7
  • Processor: 2 GHz Dual Core
  • Memory: 2 GB RAM
  • Graphics: NVIDIA GeForce 6800
  • DirectX: Version 9.0c
  • Storage: 1 GB available space
  • Sound Card: DirectX compatible sound card

System requirements for Android

4.0 and up

System requirements for iOS

iPhone 5s, iPad Air, iPad Air Cellular, iPad Mini Retina, iPad Mini Retina Cellular, iPhone 6, iPhone 6 Plus, iPad Air 2, iPad Air 2 Cellular, iPad Mini 3, iPad Mini 3 Cellular, iPod Touch Sixth Gen, iPhone 6s, iPhone 6s Plus, iPad Mini 4, iPad Mini 4 Cellular, iPad Pro, iPad Pro Cellular, iPad Pro 9.7, iPad Pro 9.7 Cellular, iPhone SE, iPhone 7, iPhone 7 Plus, iPad 6 1 1, iPad 6 1 2, iPad 7 1, iPad 7 2, iPad 7 3, iPad 7 4, iPhone 8, iPhone 8 Plus, iPhone X, iPad 7 5, iPad 7 6, iPhone X S, iPhone X S Max, iPhone X R, iPad 8 1 2, iPad 8 3 4, iPad 8 5 6, iPad 8 7 8, iPad Mini 5, iPad Mini 5 Cellular, iPad Air 3, iPad Air 3 Cellular, iPod Touch Seventh Gen
Edit the game info
Last Modified: Feb 20, 2023

Where to buy

App Store
Google Play

Top contributors


1 edit
Take A Day Off, Doc
Finish 5 missions without the Research Unit.
Endangered Species
Collect 100 Dancing Aliens.
All Clear
Finish 12 missions on 3 stars.
Kill 30000 aliens.
Gun Forest
Place 50 weapons in a single mission.
view all achievements
10 items

Radiant Defense reviews and comments

Translated by
Microsoft from Deutsch
A colorful and actually good classic Tower Defense Game, but unfortunately with one of the worst tower KIs I've ever experienced at a TD (TDs I've played for more than two Hours). In the case of good tower KIs, the Player can also refine the Strtategie With adjustable Target options, good Example is Defenders Quest. Otherwise, a Tower should attack a Target where it can do Damage and that is closest to the Exit. Simple KIs only take into account the Air Line, good KIs take the current Route to The exit. Radiant Defense does not matter about the two, nor can it be said that the Enemies are attacked with the shortest distance from the Tower. The Towers like to shoot at the exact Position of the Enemy, with small Enemies moving sideways towards the firing Direction they often do not hit the real Target and one has to hope that the Enemies are hit directly behind it. Once you've built Slow-storms, that problem reduces. Other There is a Fast Forward Waves can be repeated The Path of the Opponents can be influenced on most maps There is no Adjustable Difficulty and most often the first Waves are the most difficult, because the Slow-motion tower and the Tower to Increase in Revenue can only be built after the expensive Research lab conclusion To TD games, the Saying Of Hannibal Smith fits in with me: "I love it when a Plan works!." Unfortunately, I have to experiment here on some Maps at the Beginning, until the Towers can no longer help but implement my Plan. With a durable tower AI, it would be a really good Game. That's why my Thumb is only half facing up. I bought the Game in The Wintersale and recommend all Interested parties wait for the next Sale. More Recommendations (mainly Tower Defense Games): http://store.steampowered.com/curator/8896126-Gametests-and-Videos
Translated by
Microsoft from French
For me, playing radiant Defense (or Robotek, which I also like a lot), it's kind of like playing on one of those old gaming machines as we still see in some bars or stores in the USA with bonus a super design and a soundtrack handed to the order of the day... Thanks to you for those moments when I really feel like making a small stop in an intergalactic saloon, between two flights in space, to give me a moment of relaxation... Small note to players who do not seem to appreciate the concept "free application/paid options": I do not know how many purchases on the app store have proven to be disappointing investments, and there is not my point, but I really like the idea of be able to explore and experience an application (especially a game) before investing on it... If I accumulate the total amount of all options and paid extansions available inside the game, the sum does not exde the €4.00! I've already bought games at higher prices and I didn't give half the time to spend fun on it before I even invested in one of these options. Thanks to the Hexage team.
Translated by
Microsoft from Deutsch
... On my iOS devices, this fun Sci-Fi Tower defense game has been going on Since 2012, so it also had to Be on the Macbook: The Game is not the Latest-but it's still Fun (that's why it's time for ' ne Review now; o). Yes, the Game BEINHALTET IAPs: For small Money you can buy a Handful of Additional Packages. However, they are NOT necessary to Play Through (then it gets quite hard, but it is possible!). The big Plus with this Model is imho that the Player can Quietly test the full-fledged Software. THAT SPIEL itself is not a Contender for an Innovation Award but ONE GUT GEMACHT: Everything works, Interface & CONTROLS are neatly programmed, nix annoyed. The Level of difficulty is balanced, which saves Frustration (E.g. "Toy Defense," anyone?!). Module allows you to design the Path of the Enemies themselves, and has a Choice of Weapons with different Effects. The tactical Possibilities are not overwhelming but sufficient-and even after Years it is still Fun. The "Flow" is very good, and it is also as fit as it was in 2012: You can Concentrate fully on solving the Levels, to fit Musik/Sounds. FAZIT: If you like TD, you can definitely buy it here. But before you believe a Review-you can download it even better for free & selbst anspielen...; o)
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