IMHO.

Games like Idle Geometry Defense

If Idle Geometry Defense is your kind of game, the closest matches are Singularity Echoes, Cosmic Ascent and ECHIDNA — 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 Idle Geometry Defense: Defend against endless waves of deadly red cubes in this futuristic idle tower defense game. Upgrade your towers, deploy mini-towers, speed up time, and rotate the battlefield in full 360°. Infinite levels. Infinite upgrades. No mercy.

2026StrategyIndieSimulation2.99 USDWindows · macOSby Urban Isotope
Idle Geometry Defense — Steam game cover

Players who liked Idle Geometry Defense also play

Steam players who put hours into Idle Geometry 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. Singularity Echoes

    WHY THIS

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

    Awaken as a hidden machine mind in a deep incremental automation strategy — rise through 14+ phases, infiltrate humanity, automate economies, harvest the heavens into stellar megastructures, and reach for scales beyond time itself. Every cycle you break only reveals a larger one waiting beyond it.

    StrategyIndieSimulationSteam ↗
  2. Cosmic Ascent

    WHY THIS

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

    Build and expand an orbital station in this idle/incremental space colony sim. Manage crew, resources, refinery chains, research and ship expeditions as you progress from Earth orbit toward new planets.

    StrategyIndieSimulationSteam ↗
  3. ECHIDNA

    WHY THIS

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

    A dead god drifts in the dark. Build a salvage fleet that carves it apart cell by cell, and watch a colossal carcass melt into a storm of flying debris and climbing numbers. Strip it to the bone then evolve and start again on something bigger.

    StrategyIndieSimulationSteam ↗
  4. Glorpnauts

    WHY THIS

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

    Build it. Automate it. Watch it grow! Glorpnauts is a space incremental where you mine asteroids, expand your fleet, build an automated economy and defend it from pirates. Prestige for permanent upgrades, explore new star systems and turn a tiny base into a thriving space operation.

    StrategyIndieCasualSteam ↗
  5. Planetfall: Endless Wave

    WHY THIS

    Ranked #5 for Idle Geometry Defense fans by collaborative filtering across millions of Steam libraries. Shares Indie and Simulation with Idle Geometry Defense.

    Planetfall: Endless Wave is an idle incremental base-defence game with a classic RTS look. Survive endless waves of alien invaders by upgrading turrets, fortifications, and troops as the battlefield grows more hostile with every wave.

    ActionIndieSimulationSteam ↗
  6. Odyssée Stellaire

    WHY THIS

    Ranked #6 for Idle Geometry Defense fans by collaborative filtering across millions of Steam libraries. Shares Indie and Simulation with Idle Geometry Defense.

    Board your ship and push the boundaries of space exploration in this contemplative space incremental. Gather resources, develop your technology, and travel from the Moon to the edge of the solar system to answer a mysterious signal from the stars.

    2026IndieSimulationCasual5.99 USDSteam ↗
  7. Pure Idle

    WHY THIS

    Ranked #7 for Idle Geometry Defense fans by collaborative filtering across millions of Steam libraries. Shares Strategy and Indie with Idle Geometry Defense.

    Become the right hand of the Creator in the search for lost perfection. Collect the light of billions of stars, guiding them into the heart of a black hole to find the one — Pure Idle. Technologies, production chains, and a long journey to the most beautiful star in the universe.

    2026StrategyIndieSimulation0.79 USDSteam ↗
  8. UFOre: Space Idle

    WHY THIS

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

    Jump into the cockpit and become the hardest-working UFO in the galaxy! Vacuum up valuable minerals from the planet's surface, manage your resources, and upgrade your ship. Automate your production lines and watch your wealth grow exponentially in this isometric idle simulation.

    StrategyIndieCasualSteam ↗

Cheaper alternatives

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

  1. POSTAL 2

    WHY THIS

    Priced ~67% under Idle Geometry Defense on Steam right now. Shares Indie with Idle Geometry 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 ↗
  2. Milk inside a bag of milk inside a bag of milk

    WHY THIS

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

    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 ↗
  3. shapez

    WHY THIS

    Priced ~67% under Idle Geometry Defense on Steam right now. Shares Strategy and Indie with Idle Geometry Defense.

    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 ↗
  4. Shower With Your Dad Simulator 2015: Do You Still Shower With Your Dad

    WHY THIS

    Priced ~67% under Idle Geometry Defense on Steam right now. Shares Indie and Simulation with Idle Geometry Defense.

    "Shower With Your Dad Simulator 2015: Do You Still Shower With Your Dad?" is a fast paced shower-simulation where you shower with your 8-bit dad.It's good, clean fun!

    2015ActionIndieSimulation0.99 USDDeck VerifiedSteam ↗
  5. Montaro

    WHY THIS

    Priced ~67% under Idle Geometry Defense on Steam right now. Shares Indie with Idle Geometry Defense.

    Montaro is a DOGE.

    2016IndieCasual0.99 USDDeck PlayableSteam ↗
  6. Bejeweled® 3

    WHY THIS

    Priced ~67% under Idle Geometry Defense on Steam right now. Shares Strategy with Idle Geometry Defense.

    The biggest, brightest Bejeweled ever! Discover all-new ways to play the world’s #1 puzzle game. Find your perfect match with 8 breathtaking game modes that meet all your moods.

    2010StrategyCasual0.99 USDDeck PlayableSteam ↗
  7. Bit Blaster XL

    WHY THIS

    Priced ~67% under Idle Geometry Defense on Steam right now. Shares Indie with Idle Geometry Defense.

    Bit Blaster XL is a fast-paced, retro arcade shoot 'em up (shmup) inspired by the classic quarter-munchers of the ‘80s. Easy to pick up, hard to put down, boost, dodge, shoot, and chase high scores in this addictive, old-school action game!

    2016ActionIndieCasual0.99 USDDeck VerifiedSteam ↗
  8. Dictators:No Peace Countryballs

    WHY THIS

    Priced ~67% under Idle Geometry Defense on Steam right now. Shares Strategy and Indie with Idle Geometry Defense.

    Dictators : No Peace Countryballs is a war simulation and dictator game. This is a fun,simple and some say a funny countryballs game. If you like simulation games, you will love playing Dictators : No Peace. Play as a dictator of your favourite country and colonize the world.

    2020StrategyIndieSimulation0.99 USDSteam ↗

Free alternatives

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

  1. Magic Archery

    WHY THIS

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

    Train a commoner to become the greatest archer in this short incremental game! Increase your stats, gather wealth from quests, buy upgrades, and infuse your arrows with magic.

    2024IndieSimulationRPGFreeDeck PlayableSteam ↗
  2. Control, I'm Not Coming Back

    WHY THIS

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

    Control, I'm Not Coming Back is a short and emotional narrative game about a lost astronaut searching for a reason to keep going forward while facing the emptiness of space. Inspired by the Hopecore aesthetic, it’s a story about positivism, friendship and our human connection with Voyager 1.

    2026IndieAdventureFree To PlayFreeDeck VerifiedSteam ↗
  3. OnlyCans: Thirst Date

    WHY THIS

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

    Feel The Fizz Inside You™ with the brand new Shize™ Collection!

    2021IndieSimulationFree To PlayFreeSteam ↗
  4. Aircar

    WHY THIS

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

    A simple immersive flying game built for VR. Pilot an aircar through a futuristic cityscape.

    2019IndieFree To PlayCasualFreeSteam ↗
  5. Outpath: First Journey

    WHY THIS

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

    Outpath: First Journey is a prologue chapter of the main game, Outpath. An experimental clicker base building game. Craft, gather & manage resources, build your base and buy more islands to exploit and expand!

    2022IndieAdventureCasualFreeDeck PlayableSteam ↗
  6. The Riftbreaker: Prologue

    WHY THIS

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

    The Riftbreaker: Prologue allows you to experience the events taking place before the story campaign of the main game. Explore an entirely new world. Gather resources. Build up a base. Defend yourself from thousands of alien creatures.

    2020ActionStrategyIndieFreeDeck PlayableSteam ↗
  7. DFHack - Dwarf Fortress Modding Engine

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Strategy and Simulation with Idle Geometry Defense.

    Extensions for Dwarf Fortress, including bugfixes, interface improvements, automation agents, design blueprints, modding building blocks, and other tools.

    2023StrategySimulationRPGFreeDeck PlayableSteam ↗
  8. SCP – Containment Breach

    WHY THIS

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

    A procedural first-person horror adventure. You are on your own after something goes terribly wrong in this top-secret containment facility. Collect items to aid in your escape and try to uncover the truth, as horror lurks behind every door. Can you make it out alive?

    2026ActionIndieAdventureFreeDeck PlayableSteam ↗

More from Urban Isotope

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

  1. Harbor Captain

    WHY THIS

    Another title from Urban Isotope, the studio behind Idle Geometry Defense. Shares Simulation with Idle Geometry Defense.

    Relaxing maritime game where you navigate ships into the harbor. 20 different harbors. Spend minutes or hours, however you like.

    2024SimulationCasual4.99 USDSteam ↗
  2. Snake King

    WHY THIS

    Another title from Urban Isotope, the studio behind Idle Geometry Defense.

    Snake King is a modern twist on the classic Snake game. Guide your snake through an open arena, eating fruit to grow longer while avoiding walls and your own tail. Simple to play, with increasing speed and difficulty—challenge yourself to beat your high score and become the Snake King!

    2024Free To PlayCasualFreeDeck PlayableSteam ↗
  3. Doomsday Tower Defense

    WHY THIS

    Another title from Urban Isotope, the studio behind Idle Geometry Defense. Shares Strategy and Simulation with Idle Geometry Defense.

    Challenging tower defense game with 20 levels. Can be completed under 2-3 hours. Kill zombies in a doomsday vibe. Discover your own strategy to beat the horde. No fluff, no story, no BS.

    2025ActionStrategySimulation15.99 USDSteam ↗
  4. Air Traffic Control

    WHY THIS

    Another title from Urban Isotope, the studio behind Idle Geometry Defense. Shares Strategy and Simulation with Idle Geometry Defense.

    Guide airplanes and helicopters safely to landing zones. A neat little game that you can pour 2-3 hours into. 20 aviation cities.

    2025StrategySimulation1.99 USDSteam ↗
  5. Port Shipping Tycoon

    WHY THIS

    Another title from Urban Isotope, the studio behind Idle Geometry Defense. Shares Strategy and Simulation with Idle Geometry Defense.

    Flip tiles to grow your shipping empire. A relaxing maritime logistics idle game.

    2025StrategyAdventureSimulation4.99 USDSteam ↗
  6. Truck Master

    WHY THIS

    Another title from Urban Isotope, the studio behind Idle Geometry Defense. Shares Strategy and Simulation with Idle Geometry Defense.

    Navigate logistic trucks to their destinations. Unload cargo then leave the warehouse. Become a master planner with zero crashes.

    2026StrategySimulationCasual2.39 USDSteam ↗
  7. Capybara Pizza Cafe

    WHY THIS

    Another title from Urban Isotope, the studio behind Idle Geometry Defense. Shares Simulation with Idle Geometry Defense.

    Manage a cozy cafe run by Capybaras, for Capybaras. Bake pizzas, serve pizzas, clean tables and ring that cash register!

    2026Simulation4.99 USDSteam ↗
  8. Port Trader

    WHY THIS

    Another title from Urban Isotope, the studio behind Idle Geometry Defense. Shares Simulation with Idle Geometry Defense.

    Incremental game about trading goods between ports. Buy and sell to earn profit. Upgrade ships, increase port capacity, optimize production rate, hire new captains, automate your trading and grow your merchant empire.

    2026SimulationCasual5.99 USDSteam ↗

Frequently asked about Idle Geometry Defense

How much does Idle Geometry Defense cost?
Idle Geometry Defense is listed on Steam at 2.99 USD (current store price; Steam sales may reduce this temporarily).
What games are most similar to Idle Geometry Defense?
Based on Steam play patterns and shared genres/tags, the games most often recommended alongside Idle Geometry Defense are Singularity Echoes, Cosmic Ascent, ECHIDNA.
Who developed Idle Geometry Defense?
Idle Geometry Defense was developed by Urban Isotope.

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 Idle Geometry Defense.

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