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.

What’s new

DIRECTIVE 1.31 — BULLETIN FOR ALL POSTS

Rearrange your rooms. You can now reshape the bunker to suit you. Every finished room has a new Rearrange section: pick another room and the two swap places for 20 parts. Residents, upgrades and stock move along with the room.

Radio room and Scouting HQ work together. Every intercepted message now has a Log decryption button. Decode it yourself, pick what it says, and a correct decryption goes into the Scouting HQ intel for free. There you can see where the fragment sits, what it holds and whether it is waiting for a scout, and those cells on the assembled map carry an antenna mark.

Fuel in plain sight. The top bar now shows your fuel stock and daily burn right next to energy. Tap it for a guide page: who burns it, where it comes from and how much the storage holds.

Back along the trail. The old metro labyrinth has a new Back button: the scout retraces the trail on their own to the previous fork or the entrance.

Class results. When a course ends, the log names every student and how much their skill grew.

No accidental trades. Every deal at the exchange office now asks for confirmation on its own card. And you can sell surplus even with a full storage: the goods leave and free up room for the parts.

While you're busy. With the labyrinth or another screen open, the bunker keeps living, but new incidents and intrusions no longer pile up on you all at once when you return.

Hold fast, Overseer.