Last Fortress: Underground

In-app purchases
3.8
429K reviews
10M+
Downloads
Content rating
Teen
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About this game

Castle, the largest community of survivors, has fallen.

Once a beacon of hope in the post-apocalypse, it now shares the same fate as the rest. Amidst the chaos, a small group of survivors managed to escape into the barren wilderness.

You are the Commander of these survivors. While escaping the zombie horde that utterly destroyed your last sanctuary, you come across a strange building jutting out from the ground. Low on supplies and left with little options, you decide to take refuge in this building. So begins your campaign of survival in this zombie-infested world.

【BUILD & CUSTOMIZE YOUR SHELTER】
Expand your shelter with numerous facilities such as the Satellite Nexus, Power Generators, the Mission Control, etc. Design the shelter’s layout whichever way you like!

【HEROES AND SURVIVORS】
Every hero and survivor possesses special life skills that helped them survive in the apocalypse. From chefs, doctors, and engineers to scientists, miners, and soldiers, it’s up to you to effectively utilize their skills!

【TEAM COMPOSITION AND SYNERGY】
Assemble a diverse team of heroes, each with their unique personalities and abilities. Formulate your favorite team combination to help you conquer even the most daunting of situations.

【VENTURE INTO THE WILD】
Journey outside the shelter and scavenge for valuable resources in the wastelands.
Set up camps to act as forward operating bases and resource points. But be on guard! Zombies could attack at any moment!

【ESTABLISH ALLIANCES WITH FRIENDS】
Fighting alone is hard, so why not fight alongside friends? Join or create an Alliance and exterminate those pesky zombies with allies! Assist allies by accelerating each other’s constructions and tech researches.
It’s a win-win situation either way! It's all or nothing now! Go forth, Commander, and embark on your adventure!
Updated on
Aug 26, 2025
Available on
Android, Windows
Events & offers

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Personal info, Financial info and 4 others
Data isn’t encrypted
You can request that data be deleted

Ratings and reviews

3.8
400K reviews
Rachel Goldwater
August 28, 2024
I waited a while after downloading this game and playing it to give it a fair shot - but now I have to say that I agree with the other reviewers who said it's kind of impossible to play when your fortress is getting attacked all the time. When starting the game, all you have to do is build, which is cool. But the higher you level up, the more "exposure" you have in the world. I wish there was a way to play by just building out your fortress, offline, so you could just enjoy the it w/o other ppl
301 people found this review helpful
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LIFE IS A GAME LIMITED
August 29, 2024
Dear Player, Thank you for your support, and we apologize for the inconvenience. We’ll forward your feedback to our team to improve the game. If you encounter any further issues, please contact us.
Chadd Simpson
January 14, 2025
We play it, because we are used to playing, and have friends who play & for some reason, want to get to that next level, that takes progressively more time, like what took half a year, the next level takes a year, and you need three of those. Not sure how I'll ever get 75k for my lvl 2 floating fortress (after lvl 30 for the underground, you get a whole new floating fortress & after processing ore for a year, only have 3k, so unless you pay, will take years to level up!). My advice, DONT PLAY!!
737 people found this review helpful
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LIFE IS A GAME LIMITED
January 21, 2025
Dear Player, We're sorry to hear about the issues you’re experiencing. If you encounter any problems in the game, please don’t hesitate to reach out to us immediately.If you need help, please contact support through the "Game Interface > Announcement > Customer Support > Help" section.
Matthew Lee
August 14, 2025
The game has become a weekly expense of 2-3k USD if you want to be competitive. Free to play are food/farm accounts so be ready to drop a lot of money if you want to compete. The studio does not do much for free to play players as upwards of 95% of content is stuck behind a pay wall.... Then there is the gambling aspect... Only positive at this point are the friends made in the game. Meeting people from all over the world has been fun.
11 people found this review helpful
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What’s new

Regular improvements and patches