IMHO.

Games like Illumina Defender

If Illumina Defender is your kind of game, the closest matches are No More Pesticide, Idol Hell and Grey Galactic — picked from the ranked list below. 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 Illumina Defender: Defend the vibrant world of Illumina from descending enemies in this retro-styled, fast-paced, single-player arcade game. Utilize strategic upgrades to keep the city safe and enjoy an electrifying soundtrack while you do it!

2024ActionStrategyIndie4.99 USDWindowsby James Stringer
Illumina Defender — Steam game cover

Players who liked Illumina Defender also play

Steam players who put hours into Illumina Defender 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. No More Pesticide

    WHY THIS

    Top pick for Illumina Defender fans by collaborative filtering across millions of Steam libraries. Shares Action and Strategy with Illumina Defender.

    No More Pesticide is an active incremental game about a cute frog exterminating swarms of mutant bugs and taking down an evil pesticide manufacturer.

    2026ActionStrategyIndieSteam ↗
  2. Idol Hell

    WHY THIS

    Second-strongest match for Illumina Defender fans by collaborative filtering across millions of Steam libraries. Shares Action and Strategy with Illumina Defender.

    🎀Idol Hell is the beginner friendly bullet hell game!🎀Play as Medli and fight through hoards of enemies and meet vibrant cute bosses! Play at your pace and choose from 4 difficulties!

    2023ActionStrategy14.99 USDSteam ↗
  3. Grey Galactic

    WHY THIS

    Third-strongest match for Illumina Defender fans by collaborative filtering across millions of Steam libraries. Shares Action and Strategy with Illumina Defender.

    Grey Galactic is a real time strategy game in space where you build up your planets and ships to conquer your enemies. Develop your empire and fleet of spaceships to destroy your enemies and take over the galaxy! Do you have what it takes to become the best Fleet Captain the UFMC has ever seen?

    2025ActionStrategyIndie8.99 USDSteam ↗
  4. Epileptic Seizure Battle Ball Challenge

    WHY THIS

    Ranked #4 for Illumina Defender fans by collaborative filtering across millions of Steam libraries. Shares Action and Strategy with Illumina Defender.

    Collect riches, fight monsters, unlock secrets and balance the task for which you have been chosen, saving humanity from an evil Saurian alien species by participating in a single player, fast paced, top down, permadeath, looter shooting, retro style game of Battle Ball.

    2022ActionStrategyIndie2.99 USDSteam ↗
  5. RPM - Road Punk Mayhem

    WHY THIS

    Ranked #5 for Illumina Defender fans by collaborative filtering across millions of Steam libraries. Shares Action and Indie with Illumina Defender.

    Hit the road for explosive bullet hell action through a post-apocalyptic wasteland!

    2024ActionIndie4.99 USDSteam ↗
  6. Mech Merc Company

    WHY THIS

    Ranked #6 for Illumina Defender fans by collaborative filtering across millions of Steam libraries. Shares Indie with Illumina Defender.

    Mech Merc Company is a 90s style mech combat simulator with business management elements. Buy and sell mechs, customize your mechs, hire and fire AI pilots, manage your business expenses, and complete tactical objective-based missions.

    2025IndieSimulationFree To PlayFreeSteam ↗
  7. DEFRAG

    WHY THIS

    Ranked #7 for Illumina Defender fans by collaborative filtering across millions of Steam libraries. Shares Strategy and Indie with Illumina Defender.

    DEFRAG is a game about cleansing corrupted sectors and refining them through optimization to build a stronger system. Collect resources, adjust configurations, and complete your build as you progress.

    2025StrategyIndieSimulation2.99 USDDeck PlayableSteam ↗
  8. Mars or Die!

    WHY THIS

    Ranked #8 for Illumina Defender fans by collaborative filtering across millions of Steam libraries. Shares Action and Strategy with Illumina Defender.

    Control two characters simultaneously! Survive, gather, collect upgrades, fight all sizes of one-eyed Martians, build defensible outposts and conquer Mars, in this glorious mix between roguelite and tower defense.

    2018ActionStrategyIndie19.99 USDSteam ↗

Cheaper alternatives

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

  1. POSTAL 2

    WHY THIS

    Priced ~80% under Illumina Defender on Steam right now. Shares Action and Indie with Illumina Defender.

    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 ↗
  2. The Test

    WHY THIS

    Priced ~60% under Illumina Defender on Steam right now. Shares Indie with Illumina Defender.

    You will answer a series of questions that will reveal truths from deep within. These questions may make you uncomfortable, but with great knowledge comes great sacrifice. Can you make it all the way through The Test, and if you do, are you sure you want the answers you seek?

    2020IndieAdventureSimulation1.99 USDDeck VerifiedSteam ↗
  3. Milk inside a bag of milk inside a bag of milk

    WHY THIS

    Priced ~70% under Illumina Defender on Steam right now. Shares Indie with Illumina Defender.

    A short story about what sort of challenges everyday little things can be. Help the girl buy milk, be the first not to disappoint her.

    2020IndieAdventure1.49 USDDeck PlayableSteam ↗
  4. Blood and Bacon

    WHY THIS

    Priced ~80% under Illumina Defender on Steam right now. Shares Action with Illumina Defender.

    This Co-op Shooter , has Day and Night levels, multiple maps, players will take on 25 enemy types and numerous bosses, like Gargantuan Monsters and Minibosses every 10 days as you explore, shoot and run for your life against the onslaught of porcine monstrosities.

    2016ActionAdventureCasual0.99 USDSteam ↗
  5. STAR WARS™ Republic Commando™

    WHY THIS

    Priced ~50% under Illumina Defender on Steam right now. Shares Action with Illumina Defender.

    You are the leader of an elite squad of Republic Commandos, your mission is to infiltrate, dominate, and ultimately, annihilate the enemy. Your squad will follow your orders and your lead, working together as a team - instinctively, intelligently, instantly. You are their leader. They are your weapon.

    2009Action2.49 USDDeck PlayableSteam ↗
  6. shapez

    WHY THIS

    Priced ~80% under Illumina Defender on Steam right now. Shares Strategy and Indie with Illumina Defender.

    shapez is an easy-going, minimalistic factory building game about the automation of shapes through extraction and satisfying production lines. Adapt to increasingly complex shapes and grow your factory across an infinitely expanding map. Your only limitation is your creativity!

    2020StrategyIndieSimulation0.99 USDDeck PlayableSteam ↗
  7. STAR WARS™ Jedi Knight - Jedi Academy™

    WHY THIS

    Priced ~50% under Illumina Defender on Steam right now. Shares Action with Illumina Defender.

    Forge your weapon and follow the path of the Jedi Jedi Knight: Jedi Academy is the latest installment of the highly acclaimed Jedi Knight series. Take on the role of a new student eager to learn the ways of the Force from Jedi Master Luke Skywalker.

    2009Action2.49 USDSteam ↗
  8. The Test: Hypothesis Rising

    WHY THIS

    Priced ~60% under Illumina Defender on Steam right now. Shares Indie with Illumina Defender.

    The second chapter in The Test trilogy. Answer a series of in-depth questions to reveal hidden truths about yourself and unlock secrets to discover how your life can change drastically with just a few, slight modifications. ...But are you sure you want the answers you seek?

    2020IndieAdventureSimulation1.99 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 Action and Indie with Illumina Defender.

    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 Illumina Defender.

    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. Counter-Strike:Global Offensive

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Action with Illumina Defender.

    Counter-Strike:Global Offensive (CS:GO) expands upon the team-based action gameplay that it pioneered when it was launched over 2 decades ago. CS:GO features new maps, characters, weapons, and game modes, and delivers updated versions of the classic CS content (de_dust2, etc.).

    2012ActionFree To PlayFreeDeck PlayableSteam ↗
  4. Awaria

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Action and Indie with Illumina Defender.

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

    2024ActionIndieFree To PlayFreeDeck PlayableSteam ↗
  5. Grimm's Hollow

    WHY THIS

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

    A spooky, freeware RPG where you search the afterlife for your brother. Reap ghosts with your scythe, explore haunted caves, and eat ghostly treats on your journey through death.

    2019IndieAdventureRPGFreeDeck PlayableSteam ↗
  6. The Expendabros

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Action and Indie with Illumina Defender.

    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. Iron Snout

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Action and Indie with Illumina Defender.

    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 ↗
  8. UNBEATABLE [white label]

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Action and Indie with Illumina Defender.

    A young girl learns a song. An exclusive side-story set in the world of D-CELL GAMES' upcoming rhythm-adventure.

    2021ActionIndieAdventureFreeDeck PlayableSteam ↗

Frequently asked about Illumina Defender

How much does Illumina Defender cost?
Illumina Defender is listed on Steam at 4.99 USD (current store price; Steam sales may reduce this temporarily).
What games are most similar to Illumina Defender?
Based on Steam play patterns and shared genres/tags, the games most often recommended alongside Illumina Defender are No More Pesticide, Idol Hell, Grey Galactic.
Who developed Illumina Defender?
Illumina Defender was developed by James Stringer and published by Digital Crypt.

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 Illumina Defender.

For library-aware picks tuned to your specific taste, sign in with Steam on the home page.

24 Games Like Illumina Defender — Ranked for 2026 · imho.run