Comparison

Radiant Defense vs Module TD Tower Defense Sci

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

Radiant Defense

Defend your space fortress against alien invasions in this vibrant defense game. Strategically build your base, deploy a variety of weapons and traps, and customize enemy paths to survive hundreds of waves. Compete for high scores in an online hall of fame.

Highlights
  • Build custom enemy paths
  • Over 300 alien waves
  • 9 upgradable weapons
  • 3 superweapons
  • Online hall of fame
  • Signature soundtrack
Features
Read full description

Radiant Defense is a 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! ◉ Build your own route for incoming waves of enemies! ◉ More than 300 waves of aliens across 14 missions ◉ 9 upgradable weapons to kill the aliens with style ◉ 3 superweapons of mass defense ◉ Online hall of fame - your scores can only grow ◉ Signature soundtrack by Kubatko IN-APP PURCHASES Radiant Defense is free to play without any ads, supported only by in-app purchases. Each in-app purchase greatly enhances your tactical options.

About

Module TD Tower Defense Sci

Defend your space base from waves of incoming enemies by strategically placing and customizing unique towers. This offline strategy game offers deep customization with modular elements and elemental bonuses to overcome challenging levels.

Highlights
  • Offline Tower Defense
  • Highly Customizable Towers
  • Modular Elements
  • Elemental Bonuses
  • 80+ Levels
  • Strategic Gameplay
  • Achievements
Features
Read full description

Tower Defense Offline game. Best td game in defence genre. Play this best tower defence strategy game. Great TD among other defence games. Defend using epic and unique towers. This is a tower defence strategy game where your goal is to defend your territory by obstructing the enemy attackers by placing defensive structures on their path of attack. In this strategy game player has a space base that must be defended by the player. You have waves of multiple incoming "enemies" that must be defended against. Overall whether you will succeed or not will depend on your ability to strategically place and construct towers in the path of attacking enemies. Highly customizable towers with 5 basic elements and more than 31 sci fi modules making your defence unique. Overcome incredible odds and build defence with strategy and wit. Download it now and enjoy the most challenging game among best tower defense games. Unparalleled level of depth for defence games. Module Tower Defense features: • 80+ levels • Customize towers to fit your strategic plan • Plan your actions carefully and adapt to the ever changing battlefield as the level transform itself during the battle • Vast amount of modular elements that can give your tower additional unique effects such as income or splash or critical strike. • Find ultimate combos as Modules can amplify each other’s performance • Enemies have special abilities that can have devastating effect on your defences. • Elements give you special bonuses and perks against certain enemies. • Change the level layout by building towers on the path of space monsters • 3 different skills that can give you yet another way to customize your experience. • Beautiful graphics • Achievements - Get rewards and show off your superiority making the best combinations possible! I personally was playing TD games all my childhood and played through almost every single one. However, when I tried other tower defence games on the market I found that they were way too simple, or just plain boring. Some of what I found were not even tower defense offline games. Selection of towers was too small, they was either easy to build or did not hold enough without donations. Enemies managed to tower rush you in case you play td games free. No matter which tower you got, your tower defence would crush and burn and your castle would fall. So I thought: there should be td games free to play with different options for towers and defences and all the perks of great strategy games. I made this tower defense offline game in hopes that it will give you the depth of old school td game experience on modern devices. Strategy is important here because the resources available to achieve these goals are limited. Strategy here involves setting goals, determining actions to achieve the goals, and mobilizing resources to execute the actions. A strategy describes how the ends (goals) will be achieved by the means (resources). It is a common knowledge that strategy typically involves two major processes: formulation and implementation. Formulation involves analyzing the environment or situation, making a diagnosis, and developing guiding policies. It includes such activities as strategic planning and strategic thinking. Implementation refers to the action plans taken to achieve the goals established by the guiding policy. In this game to succeed you will need to understand both of these processes. Hope you like it. And if you don’t: leave me a comment so I can make it better. =) We have got everything that makes great playing experience: tower, best strategy offline elements, sci fi setting. Explore one of the best tower defence offline games out there and unleash the power of the best tower you can build. https://www.facebook.com/Module-TD-Sci-Fi-Tower-Defense-2151672478181003/ http://moduletd.com/

Screenshots

Radiant Defense4 screens
Module TD Tower Defense Sci4 screens

Verdict

The call

The clearest difference is review sentiment: Radiant Defense at 64% against Module TD Tower Defense Sci's 43%. Radiant Defense also leads on iOS requirement (12.0 vs 15.6). Module TD Tower Defense Sci's advantage is rating (4.5 vs 4.2) and ratings volume (1.3K vs 144). On price, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Radiant Defense sells 4 one-off in-app purchases and Module TD Tower Defense Sci sells 12 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Module TD Tower Defense Sci holds the better App Store score, 4.5 against 4.2. That said, the two scores are not equally well evidenced: Module TD Tower Defense Sci has 1.3K ratings behind it against 144, so its average is the more settled of the two. Written reviews complicate that: 64% of Radiant Defense's written reviews are positive against 43% of Module TD Tower Defense Sci's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Radiant Defense ships an update every 6 weeks, Module TD Tower Defense Sci monthly. The most recent releases landed on September 21, 2026 and September 19, 2026 respectively.

Scorecard4 real differences · 6 level
Radiant Defense versus Module TD Tower Defense Sci: the parameters behind the verdict, then further details
ParameterRadiant DefenseModule TD Tower Defense Sci
PriceFreeFree
Rating4.2 (144 ratings)4.5 (1.3K ratings) — better
Positive reviews64.3% of reviews — better43.0% of reviews
Number of ratings1441.3K — better
Update frequencyEvery 6 weeksMonthly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better15.6
Further details — not scored
Size18 MB413 MB
Age rating9+9+
DeveloperDavid PeroutkaMikhail Vladimirovich

Customer experience

Radiant Defense

All ratings144 ratings
Positive78.5%
Neutral6.3%
Negative15.3%
Written reviews322 reviews
Positive64.3%
Neutral10.9%
Negative24.8%

Module TD Tower Defense Sci

All ratings1,254 ratings
Positive86.2%
Neutral7.0%
Negative6.8%
Written reviews149 reviews
Positive43.0%
Neutral14.1%
Negative43.0%

User reviews

Radiant Defense

From 144 App Store ratings

What we love

  • 💎 One of My Favorite Games Ever
  • 🏆 GOAT TD
  • 🎨 Vibrant design and friendly to battery life
  • 🕹️ Nostalgic and simple fun with a good amount of challenge
  • 🎮 Classic Tower Defense game

Room to improve

  • 🔓 Pay to complete
  • 🔓 Can't be completed without buying extras
  • 🔓 Pay to win
  • 🔓 Missing In-App Purchases
  • 🔓 Pay to win borderline pay to play

Module TD Tower Defense Sci

From 1.3K App Store ratings

What we love

  • 🚀 Challenging and fun
  • 🔒 No aggressive in-app purchases
  • 🔒 No forced ads
  • 👍 Customizable towers and strategy
  • 👍 Lots of levels and replay value

Room to improve

  • 🐛 Bugs and glitches
  • 🐛 Levels not properly optimized for newer devices
  • 🐛 Crashes and freezes on certain levels
  • 🐛 Progression and purchases not syncing across devices
  • 🐛 Difficulty spike and pay-to-win mechanics

Bugs and requests

Radiant Defense

Reported bugs

3 issues
  • Score not updating
  • Frequent crashes and performance issues
  • Buttons not responsive

Requested features

5 requests
  • Option to delete all progress and start from the beginning
  • More levels and new content
  • Endless survival mode
  • Controller support on iOS
  • Ability to set preferred targets for towers

Module TD Tower Defense Sci

Reported bugs

5 issues
  • Levels not loading properly
  • Towers disappearing or not functioning
  • Game progress being reset or lost
  • Incompatibility issues with newer devices
  • Crashes and freezes on certain levels

Requested features

5 requests
  • More levels and updates
  • Better tutorial and in-game explanations
  • Difficulty options and customization
  • Sync progress and purchases across devices
  • Improved performance and optimization

In-app purchases

4 purchases

Radiant Defense

One-time4
  • Burning Pack$1.99
  • Science Pack$1.99
  • Explosive Pack$1.99
Show 1 more
  • Xenobiology Pack$1.99
12 purchases

Module TD Tower Defense Sci

One-time12
  • Matrix Small Pack$0.99
  • Metamaterials+Matrix Small$0.99
  • Matrix Moderate Pack$1.99
Show 9 more
  • Average Pack$2.99
  • Matrix Average Pack$4.99
  • Metamaterials Average Pack$4.99
  • Matrix Good-Sized Pack$8.99
  • Metamaterials+Matrix Medium$8.99
  • Matrix Large Pack$17.99
  • Metamaterials Large Pack$17.99
  • Metamaterials Huge Pack$43.99
  • Metamaterials and Matrix$49.99

Questions

Is Radiant Defense free?
Radiant Defense is free to download, with in-app purchases available.
Is Module TD Tower Defense Sci free?
Module TD Tower Defense Sci is free to download, with in-app purchases available.
Which has better reviews, Radiant Defense or Module TD Tower Defense Sci?
Module TD Tower Defense Sci is rated higher. Radiant Defense averages 4.2 out of 5 from 144 ratings, while Module TD Tower Defense Sci averages 4.5 from 1.3K ratings.
Do Radiant Defense or Module TD Tower Defense Sci have ads?
Neither Radiant Defense nor Module TD Tower Defense Sci shows ads.
Which is updated more often, Radiant Defense or Module TD Tower Defense Sci?
Radiant Defense ships an update every 6 weeks, and Module TD Tower Defense Sci monthly. Most recently, Radiant Defense was updated on September 21, 2026 and Module TD Tower Defense Sci on September 19, 2026.

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