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Best Underground Facility Game

210+ iOS apps & games curated and reviewed

4.5 avg rating
20 free apps & games
Updated June 2026

The best underground facility game apps on iPhone average 4.5★ across 210+ titles — we've ranked them by what real users actually keep on their phones. Updated June 2026.

Top Picks for Underground Facility Game

Last Fortress: Underground#1

Last Fortress: Underground by LIFE GAME PTE. LTD.

Zombie alert! Go underground!
Editor's Choice
🎮 Games
4.5😞(55K ratings)
FreeAdsIn-App Purchases
#40in Games
Last Fortress: Underground screenshot 1
Last Fortress: Underground screenshot 2
Last Fortress: Underground screenshot 3
Last Fortress: Underground screenshot 4
Last Fortress: Underground screenshot 5
Last Fortress: Underground screenshot 6

In a post-apocalyptic world overrun by zombies, lead a group of survivors as their Commander and build a new fortress underground for survival. Make strategic decisions, gather resources, and defend against the zombie horde in this intense survival game. Are you ready to take on the challenge?

What We Love

  • 🚀 Addictive gameplay
  • 🕹️ Engaging alliance system
  • 🎨 Detailed graphics
  • 🤝 Friendly community

Room to Improve

  • 💰 Heavily pay-to-win model
  • 🤖 Overpowered pay-to-win players
  • 🔍 Misleading advertisements
Zero City: Zombie Shelter Game#2

Zero City: Zombie Shelter Game by MYGAMES MENA FZ LLC

Fortress: Underground Survival
Strong Contender
🎮 Games
4.7😐(15K ratings)
FreeAdsIn-App Purchases
Zero City: Zombie Shelter Game screenshot 1
Zero City: Zombie Shelter Game screenshot 2
Zero City: Zombie Shelter Game screenshot 3
Zero City: Zombie Shelter Game screenshot 4
Zero City: Zombie Shelter Game screenshot 5
Zero City: Zombie Shelter Game screenshot 6

A survival mobile game where you build and manage a shelter in a post-apocalyptic world filled with zombies. Protect your inhabitants, scavenge for resources, and fight off zombie attacks to ensure your shelter's survival. Can you beat the odds and thrive in this dangerous world?

What We Love

  • 🚀 Great game
  • 🚀 Fun and addictive
  • 👍 Interesting story and characters
  • 👍 Good variety of gameplay options

Room to Improve

  • 💰 Pay-to-win mechanics
  • 🕰️ Extremely long upgrade/wait times
  • 🤖 Arena matchmaking issues
KAIJU NO. 8 THE GAME#3

KAIJU NO. 8 THE GAME by Akatsuki Games Inc.

Worth Considering
🎮 Games
4.9😊(8.3K ratings)
FreeAdsIn-App Purchases
KAIJU NO. 8 THE GAME screenshot 1
KAIJU NO. 8 THE GAME screenshot 2
KAIJU NO. 8 THE GAME screenshot 3
KAIJU NO. 8 THE GAME screenshot 4
KAIJU NO. 8 THE GAME screenshot 5
KAIJU NO. 8 THE GAME screenshot 6

Experience the epic battles of a turn-based combat system, where you can overpower colossal Kaiju with strategic depth and devastating ultimate attacks. Explore the world of KAIJU NO. 8, featuring stunning visuals and an all-star voice cast, and discover the gripping story and untold stories of your favorite characters.

What We Love

  • 🚀 Smooth gameplay
  • 👍 Generous gacha system
  • 💎 High-quality visuals and animations
  • 🤩 Faithful to the source material

Room to Improve

  • 🐛 Occasional crashes or bugs
  • 🕰️ Limited endgame content

More Underground Facility Game apps to explore

4
Plants vs. Zombies™ 2
Plants vs. Zombies™ 2
Plants vs. Zombies™ 2
Collect garden guardians!
Free

In this award-winning action-strategy adventure, gather an army of plants to battle hordes of comical zombies across various eras. With over 200 million downloads, unlock hundreds of plants, compete in arenas, and journey through different worlds in this addictive game. Ready to protect your brain?

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5
Hole Never Ends Horror Game
Hole Never Ends Horror Game
Hole Never Ends Horror Game
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Free
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6
Castle Crafter Survival Craft
Castle Crafter Survival Craft
Castle Crafter Survival Craft
online pixel world craft game
Free

Experience epic warfare in a pixelated world with Castle Crafter Survival Craft. Battle real players in various game modes like Capture The Flag and Team Deathmatch using weapons and strategic tactics. Download now for free and immerse yourself in this thrilling online crafting game!

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7
Tomb of the Mask+
Tomb of the Mask+
Tomb of the Mask+
Pixel labyrinth full of traps!
Free

Embark on an exhilarating adventure through a traps-filled labyrinth in this arcade game sensation that has enamored over 500 million players worldwide. Discover hidden traps, overcome obstacles, and unlock special powers as you journey through an intricate maze of twists and turns. Join the millions in this world of mystery and endless fun!

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8
Colossatron
Colossatron
Colossatron
Match 3 and Snake in one game
Free

Embark on a destructive adventure as you control a colossal robotic snake in a unique blend of Match 3 and Snake gameplay. Build powerful weapons by merging colored power-ups, conquer bosses, and dominate in intense survival challenges. Experience non-stop action with no ads or in-app purchases. Engage in epic battles now!

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9
Rise of Arks: Survival Game
Rise of Arks: Survival Game
Rise of Arks: Survival Game
by HONG KONG IMMERSIVE GAMES CO., LIMITED
Free

Experience an exhilarating sea survival adventure in a post-apocalyptic world. Lead your community to safety by building sea shelters, exploring mysterious areas, competing for vital resources, forming alliances, and engaging in epic battles. Survive, thrive, and establish your maritime legacy in this compelling game of strategy and resilience. Follow us on Facebook and Discord for more updates and community interaction.

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10
Backrooms Descent: Horror Game
Backrooms Descent: Horror Game
Backrooms Descent: Horror Game
Escape The Backrooms Horrors
Free

Descend into the horrors of infinite maze-like backrooms in this stealth horror game. Find your way out by exploring levels, avoiding monsters, and collecting scarce items. Face the fear, stay alert, and escape the darkness.

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(4.9K)
11
Pixel Rumble
Pixel Rumble
Pixel Rumble
Retro anime brawl begins!
Free

Join a vast collection of legendary characters from anime, manga, and games in an ultimate RPG adventure. Assemble your dream team, explore diverse worlds, and engage in strategic battles with a mix of auto battles, offline rewards, and competitive multiplayer features.

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(4.8K)
12
One-Punch Man:Road to Hero 2.0
One-Punch Man:Road to Hero 2.0
One-Punch Man:Road to Hero 2.0
by NATASKY GAMES LIMITED
Free

Embark on an epic adventure in a mobile idle strategy card game where you collect popular heroes, powerful monsters, and engage in battles through various game modes. Unleash unique abilities in dynamic battles and explore strategic formations to dominate in PvP tournaments and challenges. For the latest updates and community engagement, visit the official social media channels.

🎮 Games
(6.8K)
13
100 Monsters Game: Escape Room
100 Monsters Game: Escape Room
100 Monsters Game: Escape Room
Pick monster games and escape!
Free

Embark on thrilling escape challenges in a horror-filled world of 100 monster games. Navigate through 100 maps, conquer missions, avoid monsters, and team up with friends to survive and escape together. Welcome to a fun and addictive gameplay experience - try your best to stay alive!

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(754)
14
Dragon Tamer: Genesis
Dragon Tamer: Genesis
Dragon Tamer: Genesis
by Hangzhou Jedi Technology Co., Ltd.
Free

Harness the power of dragons in a dynamic turn-based strategy game. Become the ultimate Dragon Tamer and conquer the realm—embrace your destiny now!

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15
RealmCraft: mine & craft world
RealmCraft: mine & craft world
RealmCraft: mine & craft world
Crafting, Building & Survival
Free

Explore a virtual world, create unique structures with blocks, and interact with other players in real-time. Join now to unleash your creativity in this immersive crafting and building experience!

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16
Monster Legends - Battle Game
Monster Legends - Battle Game
Monster Legends - Battle Game
Fight beasts in mobile battles
Free

A captivating breeding RPG game where players collect and merge monsters to build powerful teams for battle. Join the adventure now!

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17
Summoners War
Summoners War
Summoners War
The Lord of the Rings Collab
Free

Engage in tactical RPG battles with over 1500 monsters in an action-packed fantasy world. Fight in real-time raids, collect monsters, and battle globally in Summoners War! Join now to experience the thrill of the Sky Arena.

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18
Hole.io
Hole.io
Hole.io
Eat the world
Free

In this addictive black hole game, become a master at swallowing buildings and outgrow other black holes in fierce battles. Expand your black hole, choose unique skins, and dominate to show you're the biggest around. Join the fun now!

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(2M)
19
PPKP
PPKP
PPKP
Punch Punch Kick Punch
Free

In a world attacked by monsters, become the hero who rebuilds the city and defeats creatures in martial arts battles. Explore scrapyards for materials, visit the restaurant to boost powers, learn ancient martial arts in the dojo, discover upgrades in the laboratory, and interact with city residents for hints. Embrace the challenge and fight on!

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20
Smashy City
Smashy City
Smashy City
Rampage through the streets!
Free

Rampage through a city with legendary monsters, destroying buildings, battling the police and army, and unlocking new characters for free. Compete with friends on leaderboards and unleash chaos in endless Rampage mode. Disable in-app purchases if desired.

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(15K)

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