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IDUN - Frontline Survival

IDUN - Frontline Survival

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!

Released Jan 20, 2025 Developer IDUN Interactive Publisher Surefire.Games Platforms Windows · Mac · Linux 3DBuildingWargameTower DefenseStrategy
View on Steam ↗ $14.99 (US · as of 2026-09-26)

What players say

Steam review score and the most-helpful voices, which may include critical ones. Score via Steam as of 2026-09-02 · quoted reviews as of 2026-05-13.

78.5%positive721 reviews
Recommended · 4 found this helpful

“IDUN is an enjoyable take on the Tower Defense genre. The gameplay is exactly what you see on the box; You shoot bugs, move turrets and a couple units around in a pseudo-RTS fashion, and work with a very basic meta-upgrading system to make your selection of defenses stronger. It…”

— a player, Steam review · 24 hrs played
Recommended · 2 found this helpful

“Wait for a sale - fun at first, but gets quite repetitive. Could use more variety in the missions - not necessarily more types, but more things that could differentiate one Defend the Refinery mission from the next Defend the Refinery mission.”

— a player, Steam review · 13 hrs played
Not recommended · 3 found this helpful

“Its okay for a time, but its too repetitive”

— a player, Steam review · 20 hrs played
Read more reviews ↗

Player activity

Monthly average concurrent players. Live data self-collected from the Steam API · history through 2026-07 via SteamCharts.

703all-time peak
0 250 500 2026 384 avg · Jan 2025

Achievement stats

Global completion rates across all Steam players — a data view of how far people actually get. Source: Steam official stats · as of 2026-09-26.

98achievements
15.5%median completion
1.6%rarest: Missions - 250
92.4% of players 88.8% of players 79.1% of players 75.1% of players 68.2% of players 59.4% of players 50.0% of players 47.8% of players 47.2% of players 46.4% of players 43.9% of players 43.6% of players 43.5% of players 37.0% of players 35.1% of players 34.0% of players 32.0% of players 31.9% of players 31.6% of players 30.2% of players 25.8% of players 25.6% of players 25.6% of players 22.4% of players 22.1% of players 22.0% of players 21.9% of players 21.4% of players 21.2% of players 21.0% of players 20.7% of players 20.5% of players 20.4% of players 20.2% of players 19.9% of players 19.7% of players 19.0% of players 18.9% of players 18.4% of players 18.3% of players 17.4% of players 17.1% of players 17.1% of players 16.9% of players 16.1% of players 16.1% of players 15.9% of players 15.6% of players 15.5% of players 15.5% of players 15.4% of players 15.3% of players 15.2% of players 15.0% of players 14.8% of players 14.7% of players 14.4% of players 14.3% of players 14.2% of players 13.8% of players 92.4% 0% most earned rarest
Almost everyone has
92.4%Wake Up Call - Cleared — Clear the Wake Up Call Mission.
88.8%Changing Gear - Cleared — Clear the Changing Gear Mission.
79.1%The Mighty Fall - Cleared — Clear the The Mighty Fall Mission.
Rarest badges of honor
1.6%Missions - 250 — Complete 250 missions.
1.7%Kill 30k Icebiter — Kill a total of 30k Icebiter
1.8%Kill 25k Boomer — Kill a total of 25k Boomer

Price tracking

US-region pricing (USD), sampled twice daily by our own tracker since 2026-08-12. Steam prices vary by region — always confirm your local price on Steam.

$14.99current · sampled 2026-09-26 21:12 UTC
$5.99lowest since tracking began2026-08-24
US14.99 USD
EU10.75 EUR
UK10.25 GBP
Australia20.50 AUD
Canada16.75 CAD
Japan1,500 JPY
Brazil37.75 BRL
China52.00 CNY

Regional prices at last sample, in local currency — Steam sets each region's price independently.

Brazil≈$7.3 China Japan Canada EU UK Australia US≈$15

Cheapest → most expensive, converted to USD at ECB reference rates (2026-09-25). Relative comparison only.

$0 $10 $20 08-12 08-21 08-30 09-08 09-17 09-26

Latest official news

Developer announcements via the Steam news API — links go to the original posts. More across all games on the news hub.

Jun 13, 2025
Patch Notes: Build 1.06 "Prio Press Punch"

Balance: Minigun Turret no longer rotates when enemies are out of range. Changes: Turrets no longer prioritize firing at the Monster Base. Steam Deck input glyphs are now larger and easier to read. Ch

May 27, 2025
Patch Notes: Build 1.04 "Target Acquired"

This patch introduces a fully reworked turret targeting system that makes defenses feel more intelligent and responsive. Raids now give Energy Cycle rewards per length completed. You’ll also find key

Apr 29, 2025
Patch Notes: Build 1.03 "Comms Hub"

Another patch filled with fixes and requested features. The new Extreme Raid "Wastelands", pushes your skill and endurance to the limit. Bans and Re-Rolls are now tied to the new Comms Hub in the Spac

Mar 13, 2025
Patch Notes: Build 1.00 "End Game" - Spring Sale Now Live With 15% Discount!

IDUN hits Build 100 with a massive update! A new cinematic wraps up the story, and Ro-Ro joins as a deployable hero after finishing the campaign. Extreme Difficulty & Epic Raids unlocks for those who

Mar 09, 2025
Patch Notes: Build 0.99 "Mines & Modifiers"

This update adds a Modifier Bar, letting you inspect active mission and run modifiers mid-game. The Liquid Geyser mission modifier provides a steady blue liquid flow, perfect for powering printers and

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From our knowledge graph — ranked by shared traits, not a black box. Each card says why it's here.

Creeper World 4 Creeper World 4 95.0% · 3,932 reviews shares Wargame, RTS, Tower Defense, War FortressCraft Evolved! FortressCraft Evolved! 71.4% · 2,393 reviews shares Mining, Tower Defense, Base Building, Crafting Planetbase Planetbase 77.1% · 6,175 reviews shares RTS, Base Building, Crafting, Building Stranded: Alien Dawn Stranded: Alien Dawn 82.8% · 6,121 reviews shares Base Building, Crafting, Building, Space Bee Island Bee Island 86.6% · 769 reviews shares Tower Defense, Base Building, War, Building Space Pirates And Zombies 2 Space Pirates And Zombies 2 78.1% · 2,126 reviews shares Crafting, Procedural Generation, Building, Space Tower Dominion Tower Dominion 87.1% · 2,613 reviews shares RTS, Tower Defense, Base Building, War Noble Fates Noble Fates 83.7% · 1,089 reviews shares Mining, Base Building, Crafting, Procedural Generation

Screenshots

Official Steam store screenshots — click any shot to enlarge.

Facts & details

From the Steam store record, snapshot 2026-05-13.

GenresAction, Adventure, Indie, Simulation, Strategy
Player tags3D · Building · Wargame · Tower Defense · Strategy · Survival · RTS · Base-Building · Mining · Sci-fi · Combat · Adventure (SteamSpy community voting)
FeaturesSingle-player · Steam Achievements · Full controller support · Steam Cloud · Family Sharing
LanguagesEnglish * , French, German, Spanish - Spain, Japanese, Simplified Chinese, Traditional Chinese, Korean, Russian *
ControllerFull support
Achievements98
Official sitehttps://www.idungame.com/
Minimum system requirements (PC)

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