
A defense RTS where you can move turrets at will. Extract resources, upgrade technology, and defend against enemy swarms in a gripping space campaign. Hold the line, set up your turrets, and brace for screen-filling hordes!
Modeled estimate, not a reported figure. How we estimate →
Discounts
Every price cut of more than 20% we have observed, in each market that quoted one, with this game's chart position on either side of it. These are episodes, not a model: a sale is one event, and one event cannot tell you what the next one will do.
Reviews, worldwide (the counter carries no country): 0.43/day in the week to Aug 25 → 0.57/day in the week after.
For scale, across Steam · Top Sellers · Brazil over the last 30 days: the 26 chart moves that followed a price cut of more than 20% went a median of 7 places towards #1, and the 2,400 moves with no price cut behind them went 2 away. One store, one chart, one country — it is the only place we have enough observations to say even that.
Prices outside the United States have been collected since 6 August 2026 and chart positions since 19 July 2026, so a cut older than that has no market to compare and a market that joined later has no history yet. Nothing here is converted between currencies.
About
Welcome to IDUN, a new breed of defense RTS where explosive single-player action meets a gripping story campaign.
Engage in a compellingly chaotic combination of RTS action and tactical tower defense to wipe out relentless alien swarms overwhelming the screen. Command a varied arsenal of combat tools in real-time, from repositionable drag-and-drop turrets to point-and-shoot orbital cannons, leveraging their strengths to overcome challenging scenarios.
Explore several diverse modes and complete fist-pumping missions, including defending the collection base, escorting nuclear vehicles, and protecting mining carts. Execute a strategic plan of defense by deploying destructive tanks, blade-spinning fans, flesh-melting turrets, and sturdy barriers to block vicious waves of extraterrestrial vermin.
Break free from traditional tower defense gameplay—deploy and reposition your units freely, taking full command of the battlefield.
Experience ever-changing missions as the battle against relentless enemy swarms reshapes the terrain. Destruction and enemy remains create new challenges and opportunities, demanding constant tactical adaptation.
Advance through a robust tech tree, upgrading your space station and unlocking devastating turrets, elite troops, and tactical tools to outlast the endless onslaught.
Rogue-lite elements ensure every run is unique, filled with fresh challenges, unpredictable encounters, and new ways to master survival.
Dive into a fully voiced story where the relentless attacks are just the beginning. Join the crew as the story unfolds in unexpected and game-changing directions.
Enjoy the freedom to play IDUN however you like! The game offers seamless support for Mouse & Keyboard, Gamepad, Touch, and is now fully optimized for Steam Deck.
Take advantage of extensive customization options for both visuals and controls, ensuring the perfect gameplay experience tailored to your preferences.
Engagement
Reviews
Themes across 62 recent reviews and how positive each mention is. A keyword signal, not full sentiment analysis.
Reviews
Great game. Managed to scratch that RTS-Tower Defense-Base Management itch that I've been scratching for a long time. lol Gameplay: Great Story: Is actually good, a parent sacrificing oneself to save an offspring. Controls: Good Graphics: Good Length: Good Cutscenes: Alright Characters: Good Game Modes: I really like the Mech Missions, reminded of Helldivers 1. lol Progression might seem slow, but you can just choose what you want to heavily upgrade first. I can get by with Hard Missions with one fully upgraded Hero and Turret plus the SkyGun Mk. II.
Hella Fun :)
Media

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Price dynamics, follower growth, revenue and sales trajectories with interactive tooltips
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Genres
Stats
All-time low is the lowest price we've recorded for this game since we started tracking it.
Languages: English*, French, German, Spanish - Spain, Japanese, Simplified Chinese, Traditional Chinese, Korean, Russian*languages with full audio support
Hours played at review time, across 62 reviews with recorded playtime.
positive critical· bar length = how often the theme comes up
好玩
最好玩的就是前几个小时,后面就纯纯的重复了,不断的重复肝数值或者风灵月影走流程,只能说等打折玩一下还是挺有意思的。
ok
Бодрая ТД,монстры прут ордами,башенки их косят.Ну насколько могут.Фирменный прикол---выигрыш миссии на последних хп.Отдельное спасибо за музыку.
brilliant story driven tower defence with lots of end game.
Очень классная игра, дает тебе как и расслабиться так и вызвать чувства превозмогания сложных миссий
nice~~~~
A suprisingly good tower defence game. IF you like TD with some variety, this is not a bad choice at all.
Players by region
Where this game's players are, estimated from review languages.
Players also reviewed
The games this title's players most often review too — audience affinity.
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