
IDUN
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!
Offers
What are keyshops?About IDUN
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.
Real-time Tactical Flexibility
Break free from traditional tower defense gameplay—deploy and reposition your units freely, taking full command of the battlefield.
Dynamic 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.
Persistent Tech Progression
Advance through a robust tech tree, upgrading your space station and unlocking devastating turrets, elite troops, and tactical tools to outlast the endless onslaught.
High Replayability
Rogue-lite elements ensure every run is unique, filled with fresh challenges, unpredictable encounters, and new ways to master survival.
The Outer Rim
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.
Play Your Way: Full Control Anywhere
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.
Game details
Game details
Age ratings
Game modes
Languages
Audio & text: English
Text only: French, German, Spanish - Spain, Japanese, Simplified Chinese, Traditional Chinese, Korean, Russian
Features
IDUN price history
Lowest tracked price: €4.30 (Jul 7, 2026) · current best: €10.75.
IDUN player count & reviews
79% positive reviews all-time · 53 peak players in the last 30 days.
IDUN — frequently asked questions
Where can I buy IDUN at the cheapest price?
Right now the cheapest offer for IDUN is €10.75 at Steam. KingsPrice compares 1 offers from 1 stores — official stores and keyshops — and refreshes prices throughout the day.
What is the lowest price IDUN has ever been?
The lowest price KingsPrice has tracked for IDUN is €4.30 (recorded on Jul 7, 2026). This covers the stores and period we monitor — set a price alert to catch the next drop to that level.
How many people play IDUN?
IDUN peaked at 53 concurrent players on Steam in the last 30 days (highest on Jul 19, 2026). The player chart on this page updates daily.
How can I get IDUN at a discount?
Create a free price alert on this page and KingsPrice will email you when IDUN drops below your chosen price. The biggest discounts usually appear during seasonal Steam sales and publisher promotions — the sale calendar on this page shows the next confirmed event.
System requirements
Minimum
- OS *: Windows 7 (SP1+) 64-bit
- Processor: Intel Core i5-10310U or AMD Ryzen 7 3700U
- Memory: 4 GB RAM
- Graphics: Intel UHD 620 or AMD Radeon Vega 3
- DirectX: Version 10
- Storage: 1 GB available space
Recommended
- OS: Windows 10/11 64-bit
- Processor: Intel Core i5-9400 or AMD Ryzen 5 3600
- Memory: 8 GB RAM
- Graphics: NVIDIA GTX 1660 or AMD Radeon RX 580
- DirectX: Version 11
- Storage: 2 GB available space










