IMHO.

Games like Radiant Defense

If Radiant Defense is your kind of game, the closest matches are Botanical TD, Planet TD and Path of Insanity — picked from the ranked list below. Reviewers single out its atmospheric, challenging and stressful. Each pick is ranked by what players of this game also play, shared genres and tags, and review-mined similarity — not a generic popularity list.

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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!

2014StrategyIndie9.99 USDDeck PlayableWindowsby Hexage
Radiant Defense — Steam game cover
Players highlight
Design your own maze routesFreedom to experiment with tower placementsHigh replay value with 300 wavesAtmosphericChallengingStressful

Players who liked Radiant Defense also play

Steam players who put hours into Radiant Defense also tend to own these titles — a signal called collaborative filtering. imho.run cross-references millions of library ownership patterns to surface games whose real audiences overlap, regardless of whether their genre tags match.

  1. Botanical TD

    WHY THIS

    Top pick for Radiant Defense fans by collaborative filtering across millions of Steam libraries. Shares Strategy and Indie with Radiant Defense.

    Defend against evil snails with a variety of plants in this Tower Defense while YOU have to make constant decisions how your enemies get stronger.

    2022StrategyIndieCasual3.99 USDSteam ↗
  2. Planet TD

    WHY THIS

    Second-strongest match for Radiant Defense fans by collaborative filtering across millions of Steam libraries. Shares Strategy and Indie with Radiant Defense.

    6 different types of towers! 4 planets with different characteristics! 25 different enemies. Drones, Tanks, Biorobotic enemies and many different ground and air vehicles! Snowy and Glacial maps, Desert and Arid lands! Prepare to defend the solar system against invaders!

    2023StrategyIndieCasual2.99 USDDeck PlayableSteam ↗
  3. Path of Insanity

    WHY THIS

    Third-strongest match for Radiant Defense fans by collaborative filtering across millions of Steam libraries. Shares Strategy and Indie with Radiant Defense.

    Path of Insanity is side scrolling based strategy game in a land of maddness where the unbelieveable becomes believeable. Arm yourself with creatures of absolute stupidity and claim victory.

    2021StrategyIndie2.99 USDSteam ↗
  4. Summer of Hengyang in 1944

    WHY THIS

    Ranked #4 for Radiant Defense fans by collaborative filtering across millions of Steam libraries. Shares Strategy and Indie with Radiant Defense.

    The game is set in the summer of 1944 during the defense of Hengyang, China. General Fang leads the Tenth Army with 17000 soldiers to resist 110000 Japanese soldiers for 47 days.

    2024StrategyIndieSimulation0.99 USDSteam ↗
  5. Countermeasure Pioneers: Modern Drone Battlefield

    WHY THIS

    Ranked #5 for Radiant Defense fans by collaborative filtering across millions of Steam libraries. Shares Strategy and Indie with Radiant Defense.

    "Countermeasure Pioneers: Modern Drone Battlefield" is an instant strategy shooting game. Players need to operate precisely, controlling soldiers to release specially-made drones equipped with net guns to capture enemy drones and disable them.

    2024ActionStrategyIndie5.99 USDSteam ↗
  6. Controware

    WHY THIS

    Ranked #6 for Radiant Defense fans by collaborative filtering across millions of Steam libraries. Shares Strategy with Radiant Defense.

    Controware is a game that will take you into the fascinating world of space warfare and allow you to become a real warlord.

    2024Strategy29.99 USDSteam ↗
  7. Xeno Command

    WHY THIS

    Shares an atmospheric mood with Radiant Defense.

    Ranked #7 for Radiant Defense fans by collaborative filtering across millions of Steam libraries. Shares Strategy with Radiant Defense.

    Defend galaxy against Alien invasion in the RTS offline game with roguelike fun

    2022Strategy4.99 USDSteam ↗
  8. Ancient Wars: Sparta HD

    WHY THIS

    Ranked #8 for Radiant Defense fans by collaborative filtering across millions of Steam libraries. Shares Strategy and Indie with Radiant Defense.

    Relive the epic battles between Spartans, Persians, and Egyptians in Ancient Wars: Sparta HD. Enjoy HD graphics, asymmetric civilizations, enhanced campaigns, new maps, smarter AI, and a revamped multiplayer mode. Forge your empire, master warfare, and make history in the Ancient World!

    2026ActionStrategyIndieSteam ↗

Cheaper alternatives

Games in the same vein priced at least 40% below Radiant Defense at current Steam store prices.

  1. Garry's Mod

    WHY THIS

    Priced ~50% under Radiant Defense on Steam right now. Shares Indie with Radiant Defense.

    Garry's Mod is a physics sandbox. There aren't any predefined aims or goals. We give you the tools and leave you to play.

    2006IndieSimulationCasual4.99 USDDeck PlayableSteam ↗
  2. Vampire Survivors

    WHY THIS

    Priced ~50% under Radiant Defense on Steam right now. Shares Indie with Radiant Defense.

    Mow down thousands of night creatures and survive until dawn! Vampire Survivors is a gothic horror casual game with rogue-lite elements, where your choices can allow you to quickly snowball against the hundreds of monsters that get thrown at you. Be the bullet hell!

    2022ActionIndieRPG4.99 USDDeck VerifiedSteam ↗
  3. Cookie Clicker

    WHY THIS

    Priced ~50% under Radiant Defense on Steam right now. Shares Strategy and Indie with Radiant Defense.

    An idle game about making cookies! Originally released in 2013 on the web, and actively developed since then. This is the official version for Steam.

    2021StrategyIndieSimulation4.99 USDDeck PlayableSteam ↗
  4. WEBFISHING

    WHY THIS

    Priced ~50% under Radiant Defense on Steam right now. Shares Indie with Radiant Defense.

    WEBFISHING a multiplayer chatroom-focused fishing game! Relax and fish (on the web!)

    2024IndieMassively MultiplayerCasual4.99 USDSteam ↗
  5. POSTAL 2

    WHY THIS

    Priced ~90% under Radiant Defense on Steam right now. Shares Indie with Radiant Defense.

    Live a week in the life of "The POSTAL Dude"; a hapless everyman just trying to check off some chores. Buying milk, returning an overdue library book, getting Gary Coleman's autograph, what could possibly go wrong?

    2012ActionIndieAdventure0.99 USDDeck VerifiedSteam ↗
  6. Plants vs. Zombies GOTY Edition

    WHY THIS

    Priced ~50% under Radiant Defense on Steam right now. Shares Strategy with Radiant Defense.

    Zombies are invading your home, and the only defense is your arsenal of plants! Armed with an alien nursery-worth of zombie-zapping plants like peashooters and cherry bombs, you'll need to think fast and plant faster to stop dozens of types of zombies dead in their tracks.

    2009Strategy4.99 USDDeck PlayableSteam ↗
  7. Buckshot Roulette

    WHY THIS

    Priced ~70% under Radiant Defense on Steam right now. Shares Indie with Radiant Defense.

    Play Russian roulette with a 12-gauge shotgun. Four enter. One leaves. Roll the dice with your life. Good luck!

    2024ActionIndieSimulation2.99 USDDeck PlayableSteam ↗
  8. Brotato

    WHY THIS

    Priced ~50% under Radiant Defense on Steam right now. Shares Indie with Radiant Defense.

    Brotato is a top-down arena shooter roguelite where you play a potato wielding up to 6 weapons at a time to fight off hordes of aliens. Choose from a variety of traits and items to create unique builds and survive until help arrives.

    2023ActionIndieRPG4.99 USDDeck VerifiedSteam ↗

Free alternatives

Free-to-play games that recommended players of this title also tend to enjoy.

  1. Ultimate Custom Night

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie with Radiant Defense.

    Welcome to the ultimate FNAF mashup, featuring 50 selectable characters and custom difficulties!

    2018ActionIndieFree To PlayFreeSteam ↗
  2. Bongo Cat

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie with Radiant Defense.

    Bongo cat needs your help. Bongo cat needz more hatz!!! Every time you press a key, Bongo cat will punch your taskbar. Type, click, play, work to collect more points. Which hats will you find?

    2025IndieSimulationMassively MultiplayerFreeDeck PlayableSteam ↗
  3. The Murder of Sonic the Hedgehog

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie with Radiant Defense.

    Sonic the Hedgehog...was murdered!? Get to the bottom of the mystery in this brand-new adventure!

    2023IndieSimulationFree To PlayFreeDeck PlayableSteam ↗
  4. Awaria

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie with Radiant Defense.

    Awaria is a short game about working in haunted maintenance tunnels.

    2024ActionIndieFree To PlayFreeDeck PlayableSteam ↗
  5. Virtual Cottage

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie with Radiant Defense.

    Virtual Cottage gives you a comfy place to rest and be productive without any distractions. Open the game, set yourself a goal and enjoy the atmosphere.

    2020IndieSimulationFree To PlayFreeDeck PlayableSteam ↗
  6. The Expendabros

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie with Radiant Defense.

    The Expendabros have assembled and set their sights on the forces of ruthless arms dealer Conrad Stonebanks in the forests of Eastern Europe.

    2014ActionIndieAdventureFreeDeck VerifiedSteam ↗
  7. Steam Engine Simulator

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it.

    The Steam Engine Simulator shown on AngeTheGreat's YouTube channel.

    2023SimulationFreeDeck VerifiedSteam ↗
  8. Iron Snout

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie with Radiant Defense.

    Iron Snout is a fast, colorful and brutal fighting game in which you will be helping a piglet fight for its life against hordes of wolves.

    2016ActionIndieFree To PlayFreeDeck PlayableSteam ↗

More from Hexage

Other recommendable Steam games by Hexage, ranked by review count so the studio's hits land first.

  1. REDCON

    WHY THIS

    Shares resource management and an atmospheric mood with Radiant Defense.

    Another title from Hexage, the studio behind Radiant Defense. Shares Strategy and Indie with Radiant Defense.

    Command your own fortress in FTL-like real-time battles! Crush the enemy fortress with unrelenting bombardment or seize it with carefully executed invasion.

    2016StrategyIndieSimulation14.99 USDSteam ↗
  2. Reaper - Tale of a Pale Swordsman

    WHY THIS

    Shares resource management and an atmospheric mood with Radiant Defense.

    Another title from Hexage, the studio behind Radiant Defense. Shares Indie with Radiant Defense.

    Enter the world ripe with magic and monsters. Become the Black Swordsman and slay thousands of enemies in an epic action RPG!

    2014ActionIndieRPG9.99 USDSteam ↗
  3. Ritual: Spellcasting RPG

    WHY THIS

    Another title from Hexage, the studio behind Radiant Defense. Shares Indie with Radiant Defense.

    Watch the chaos unravel as you blaze through hordes of monsters in a unique spell-casting action RPG.

    2019ActionIndieRPG9.99 USDSteam ↗
  4. Flying Tank

    WHY THIS

    Shares resource management and an atmospheric mood with Radiant Defense.

    Another title from Hexage, the studio behind Radiant Defense. Shares Indie with Radiant Defense.

    Get into your Flying Tank and shoot 'em up like it's the good old days! Kill strange bosses, drop bombs from above and build an arsenal of fun, powerful weapons. Reclaim the stolen Earth - alone or with a friend - in a rich action-packed side-scrolling shmup!

    2024ActionIndie14.99 USDDeck VerifiedSteam ↗

Frequently asked about Radiant Defense

Does Radiant Defense run on Steam Deck?
Radiant Defense is rated Playable on Steam Deck — it runs, but expect some manual adjustments (control remapping, text size, or graphics settings) for the best experience.
How much does Radiant Defense cost?
Radiant Defense is listed on Steam at 9.99 USD (current store price; Steam sales may reduce this temporarily).
What games are most similar to Radiant Defense?
Based on Steam play patterns and shared genres/tags, the games most often recommended alongside Radiant Defense are Botanical TD, Planet TD, Path of Insanity.
Who developed Radiant Defense?
Radiant Defense was developed by Hexage.

imho.run ranks Steam game alternatives using a mix of collaborative filtering (ALS / iALS / EASE / LightGCN), content scoring over genres, categories, Steam tags, developers, and publishers, plus AI-extracted vibes mined from review text. The page above is generated in seed mode anchored on Radiant Defense.

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28 Games Like Radiant Defense — Ranked for 2026 · imho.run