Underground: Bunker Survival
Sunspear Software LLC Games iPhoneiPadiPod touch
Underground: Bunker Survival is a free Games app for iPhone and iPad by Sunspear Software LLC. Rated 5.0/5 from 6 ratings. Requires iOS 17.6.
- Rating
- 5.0
- 6 ratings
- Price
- Free
- on the App Store
- Size
- 35 MB
- Age 9+
- Updated
- Oct 21
- 2026 · v1.38
Screenshots
About Underground: Bunker Survival
The world has fallen. You are the last hope for those knocking at your gates. Underground is a deep bunker-management sim where every decision echoes through your food, water, power — and your people's spirits. Build compartments across three floors, take in survivors at the airlock, keep your resources in balance, and don't let the bunker go dark. What's waiting for you: • A living bunker — 40+ compartment types: generator room, farm, med bay, laboratory, armory, district map, the old metro and more. Every room works differently and demands your attention. • Resources with consequences — power, water, food, air, parts, fuel. Run out of water and newcomers will walk right past your gates. Overheat the generator and an accident is only a matter of time. • People, not numbers — every resident has skills, health, stress and relationships. Quarrels, illness, theft, panic — incidents won't wait: you have limited time to solve a problem before it gets worse. • Arrivals at the gate — survivors keep coming to the airlock. Let them in, turn them away, or send them off with rations? Your bunker's reputation decides who shows up tomorrow. • Your own path — fortress, radio contact, autonomy, science, evacuation or a return to the surface. Goals will show you where to grow next. • The metro and recon — explore the tunnels, gather loot, trade with friends and fight off threats in the corridors. • Mini-games that matter — harvest crops, repair equipment, calm a panic: quick games earn resources and change how events end. • Friends in the game — add friends, meet their survivors at your gates, exchange resources and earn bonuses for playing together. • Play at your own pace — minimize the app and time in the bunker stops. Come back and pick up right where you left off. Who this game is for: If you love Fallout Shelter, This War of Mine, or management games with personality — this one is full of "what if I try it this way?" moments. Not a five-minute arcade, but a bunker that grows with you. Download. Open the airlock. Decide who gets in first.
Ratings & reviews
5.0
6 ratings
What’s new
Version 1.38 · Updated October 21, 2026
DIRECTIVE 1.38 — BULLETIN FOR ALL POSTS Parts ledger. HQ now keeps a ledger of parts. Tap parts in the top bar. The card shows how many came in and went out today and yesterday. It also lists what the parts were spent on and where they came from: rooms, incidents, construction, upgrades, day skips, exchange. And it shows which rooms make or use parts on their own every day. Daily summary. When a new day begins, one line arrives in the bell: how many parts came in and went out over the past day, and what took the most. Hold fast, Overseer.
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App privacy
The developer, Sunspear Software LLC, reported these privacy practices to Apple.
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Purchases: Purchase History
- Identifiers: Device ID
Data Linked to You
The following data, which may be collected and linked to your identity, may be used for the following purposes:
- Purchases: Purchase History
- Identifiers: Device ID
Used for: Third-Party Advertising, Analytics
Alternatives to Underground: Bunker Survival
Looking for apps like Underground: Bunker Survival? Here are 6 similar apps on the App Store. The highest rated is Downfall Survival Sim (5.0/5), and all 6 are free to download.
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Downfall Survival Sim
5.0
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DoomBunker: Shelter Survival
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Triptoy
5.0
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Peers : Chocolate Tycoon
4.4
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Mayor 4000: City Builder
4.8
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Upside Down: Strange World
4.6
| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| Underground: Bunker Survival | 5.0 / 5 (6 ratings) | Free | October 21, 2026 | |
| Downfall Survival Sim | 5.0 / 5 (1) | Free | Oct 2, 2026 | Compare |
| DoomBunker: Shelter Survival | – | Free | Oct 12, 2026 | Compare |
| Triptoy | 5.0 / 5 (43) | Free | Oct 22, 2026 | Compare |
| Peers : Chocolate Tycoon | 4.4 / 5 (21) | Free | Sep 8, 2026 | Compare |
| Mayor 4000: City Builder | 4.8 / 5 (49) | Free | Oct 11, 2026 | Compare |
| Upside Down: Strange World | 4.6 / 5 (582) | Free | Jul 6, 2026 | Compare |