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DIG. BUILD. DESTROY.
Bunker Buster is a tactical underground base-builder with real-time combat. Excavate a hidden fortress beneath the earth, power it, staff it, arm it, then defend it against relentless enemy factions or take the battle to them.
BUILD YOUR BUNKER
Construct a fully self-sufficient underground fortress room by room. Manage power, air, water, food, sanitation, and morale while preparing for war.
SYNTHESIZE YOUR ARSENAL — BILLIONS OF COMBINATIONS
Every weapon, defence, and daemon is built piece by piece, not picked off a shelf.
Combined, these systems give you billions of viable loadouts — no two bunkers, and no two battles, play the same.
GO TO WAR
Fight across a tactical No Man's Land in real time. Target enemy rooms, intercept incoming strikes, and deploy your full arsenal.

CONQUER FACTIONS. CLAIM THEIR WEAPONS.
Ten enemy factions each bring unique tactics. Defeat them and capture their technology for your own arsenal, including burrowing Mole Torpedoes, orbital kinetic rods, signal jammers, and more.
MULTIPLAYER / RAID ENEMY FORTRESSES
Build your fortress, then raid other players' bunkers via Steam. Challenge friends directly or find opponents through the quickmatch queue.
KEY FEATURES
Deep base-building with power, air, water, and morale simulation