Radiant Defense

72KS
Released Jul 11, 2014by HexageVery Positive(83% of 148 Steam reviews)

MILLIONS OF ALIENS WILL DIE!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!

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About Radiant Defense

MILLIONS OF ALIENS WILL DIE

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 mode

Support and Feedback


Please contact [email protected] with any inquiry or feedback.

Follow @hexage for the latest development updates and news.

Game details

Game details

Released
Developer
Publisher
Platforms
Steam Deck
Playable
Steam rating
Very Positive (83%)

Age ratings

IGRS 13DEJUS 12STEAM_GERMANY 12

Game modes

Radiant Defense price history

Lowest tracked price: $4.99 (Jul 7, 2026) · current best: $9.99.

Radiant Defense player count & reviews

83% positive reviews all-time · 5 peak players in the last 30 days.

Radiant Defense — frequently asked questions

Where can I buy Radiant Defense at the cheapest price?

Right now the cheapest offer for Radiant Defense is $9.99 at Steam. KingsPrice compares 1 offers from 1 stores — official stores and keyshops — and refreshes prices throughout the day.

What is the lowest price Radiant Defense has ever been?

The lowest price KingsPrice has tracked for Radiant Defense is $4.99 (recorded on Jul 7, 2026). This covers the stores and period we monitor — set a price alert to catch the next drop to that level.

How many people play Radiant Defense?

Radiant Defense peaked at 5 concurrent players on Steam in the last 30 days (highest on Jul 23, 2026). The player chart on this page updates daily.

How can I get Radiant Defense at a discount?

Create a free price alert on this page and KingsPrice will email you when Radiant Defense drops below your chosen price. The biggest discounts usually appear during seasonal Steam sales and publisher promotions — the sale calendar on this page shows the next confirmed event.

System requirements

Minimum

Minimum:
  • OS *: Windows 8
  • Processor: 2 GHz Dual Core
  • Memory: 2 GB RAM
  • DirectX: Version 10
  • Storage: 1 GB available space

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