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Immortal Defense

Immortal Defense

Immortal Defense is a story-driven tower defense game in which you give up your body and life to become an immortal "path defender", and defend your home world from destruction, forever. The game takes place over millions of years. Is there anything you would give up everything to defend?

Released Aug 31, 2015 Developer Studio Eres Platforms Windows IndieStrategyActionTower DefenseSci-fi
View on Steam ↗ $9.99 (US · as of 2026-09-25)

What players say

Steam review score and the most-helpful voices, which may include critical ones. Score via Steam as of 2026-08-31 · quoted reviews as of 2026-05-14.

86.3%positive219 reviews
Recommended · 0 found this helpful

“Had this in my library forever. Finally got around to playing it and it's great. I definitely underestimated this game, and would recommend to anyone. This is a tower defense with the punch of an action game. Charge Cut feels so good.”

— a player, Steam review · 1 hrs played
Recommended · 0 found this helpful

“Awesome game with quirky TD mechanics, thoughtful writing, and a lovely art style which is more readable than one would think.”

— a player, Steam review · 18 hrs played
Recommended · 0 found this helpful

“I love you, Grandpa.”

— a player, Steam review · 6 hrs played
Read more reviews ↗

Achievement stats

Global completion rates across all Steam players — a data view of how far people actually get. Source: Steam official stats · as of 2026-09-19.

40achievements
6.5%median completion
2.6%rarest: Gutei's Finger
39.6% of players 17.6% of players 16.7% of players 15.5% of players 15.1% of players 11.7% of players 11.1% of players 10.6% of players 9.9% of players 9.6% of players 8.9% of players 8.7% of players 8.4% of players 8.1% of players 8.1% of players 7.8% of players 7.3% of players 7.0% of players 6.9% of players 6.5% of players 6.5% of players 6.4% of players 6.3% of players 5.8% of players 5.4% of players 5.4% of players 5.3% of players 5.0% of players 4.4% of players 4.3% of players 4.3% of players 3.9% of players 3.7% of players 3.6% of players 3.5% of players 3.4% of players 3.2% of players 3.0% of players 2.9% of players 2.6% of players 39.6% 0% most earned rarest
Almost everyone has
39.6%Aa's Charm — Hidden achievement
17.6%Bavakh Claw — Hidden achievement
16.7%Blinding Medal — Hidden achievement
Rarest badges of honor
2.6%Gutei's Finger — Hidden achievement
2.9%Gnome Medal — Hidden achievement
3.0%Dukis Cross — Hidden achievement

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.

$9.99current · sampled 2026-09-25 21:36 UTC
$1.19lowest since tracking began2026-08-24
US9.99 USD
UK6.99 GBP
Australia14.50 AUD
Canada10.99 CAD
Japan980 JPY
Brazil14.99 BRL
China36.00 CNY

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

Brazil≈$2.9 China Japan Canada UK US Australia≈$10

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 09-16 09-25

Latest official news

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

Feb 11, 2017
v1.2.7 Patch Notes

BALANCE - Endless levels now are not quite as endless. It's now much more difficult to last a half hour, an hour, or more, because the difficulty in those levels now scales faster the longer a level l

Feb 11, 2017
v1.2.7 Patch Notes

BALANCE - Endless levels now are not quite as endless. It's now much more difficult to last a half hour, an hour, or more, because the difficulty in those levels now scales faster the longer a level l

Dec 08, 2015
v1.2.4 PATCH NOTES (December 8, 2015)

v1.2.4 PATCH NOTES (December 8, 2015) Summary: This patch adds a new system where you can only have a limited number of medals active at any one time; this is intended to add more strategy to the meda

Dec 08, 2015
v1.2.4 PATCH NOTES (December 8, 2015)

v1.2.4 PATCH NOTES (December 8, 2015) Summary: This patch adds a new system where you can only have a limited number of medals active at any one time; this is intended to add more strategy to the meda

Sep 19, 2015
v1.2.2 Patch Changes

Major balance changes in this patch, to the Points, to some of the medals, and especially to the Point's achievement campaigns. A lot of other changes too, this is a pretty big patch. The patch change

Games like Immortal Defense

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

AI War: Fleet Command AI War: Fleet Command 84.4% · 1,225 reviews shares Cult Classic, Tower Defense, Space, Great Soundtrack Star Saviors Star Saviors 80.7% · 683 reviews shares Space, Great Soundtrack, Difficult, Sci Fi Antichamber Antichamber 95.0% · 13,181 reviews shares Psychedelic, Psychological, Abstract, Great Soundtrack Pathologic Classic HD Pathologic Classic HD 87.2% · 2,175 reviews shares Cult Classic, Great Soundtrack, Dark, Difficult Spec Ops: The Line Spec Ops: The Line 92.7% · 27,490 reviews shares Based On A Novel, Psychological, Great Soundtrack, Dark The Swapper The Swapper 94.5% · 5,160 reviews shares Space, Great Soundtrack, Difficult, Sci Fi Sunrider: Mask of Arcadius Sunrider: Mask of Arcadius 92.1% · 2,026 reviews shares Space, Great Soundtrack, Difficult, Sci Fi Waveform Waveform 81.7% · 862 reviews shares Space, Great Soundtrack, Difficult, Sci Fi

Screenshots

Official Steam store screenshots — click any shot to enlarge.

Facts & details

From the Steam store record, snapshot 2026-05-14.

GenresAction, Indie, Strategy
Player tagsIndie · Strategy · Action · Tower Defense · Sci-fi · Space · Great Soundtrack · Story Rich · Transhumanism · Atmospheric · Difficult · Dark (SteamSpy community voting)
FeaturesSingle-player · Steam Achievements · Steam Trading Cards · Steam Workshop · Steam Cloud · Steam Leaderboards · Includes level editor · Family Sharing
LanguagesEnglish, French, Spanish - Spain, Japanese, Portuguese - Brazil, Russian
Achievements40
Official sitehttp://immortaldefense.com
Minimum system requirements (PC)

Minimum: OS *: Windows XP, Vista, 7, 8, or 10 Memory: 1024 MB RAM Graphics: 128MB DirectX: Version 9.0 Storage: 350 MB available space