
Screenshots

Watch trailer on Steam ↗Bunker Buster
ALPHALOTA · Published by ALPHALOTA
1 user reviews — 0% positive (1 reviews)
Last updated 29 Sept 2026
Dig deep and build a self-sufficient bunker. Manage power and life support, then arm it with billions of possible weapon, defence, and cyber-warfare combinations, and strike first, or defend.
£13.75
Lowest price we've ever recorded
View on SteamPrices can lag the live Steam store — always confirm before buying.
Price history
Indie, Strategy, Early Access · 2026 · More £5 - £15 games
About this game
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.
Infrastructure — Generators, storage depots, cooling loops, exhaust vents
Life Support — Air intakes, scrubbers, water pumps, kitchens, med bays
Weapons — Missile silos, artillery, mortar pits, EMP cannons, drone hives, mech hangars
Defences — SAM sites, AA flak, Trophy active-protection systems, armour plating
Surface Installations — Watchtowers, radar domes, HESCO walls, camo netting
Intelligence — Radio intercept, seismic arrays, signal jammers
SYNTHESIZE YOUR ARSENAL — BILLIONS OF COMBINATIONS
Every weapon, defence, and daemon is built piece by piece, not picked off a shelf.
Ammo Synthesis — Stack up to 25 stat modifiers across 6 weapon platforms. Order changes the outcome: the same components in a different sequence fire differently.
Defence Synth — Layer 10 intercept modifiers across SAM, AA Flak, and Trophy systems to counter incoming fire before it lands.
Cyber Warfare Suite — Engineer daemons from 15 code modifiers and conditional triggers, or stack 10+ firewall layers into an unbreakable defence grid.
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.
Launch ICBMs from buried silos
Deploy combat mechs to hold the line
Scramble drone swarms for recon and assault
Fire precision artillery or suppress with mortar fire
Breach enemy systems with your own synthesized cyberweapons
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
Billions of weapon, defence, and cyber-warfare combinations via three full synthesis systems
Real-time tactical combat with dozens of weapon systems
10 enemy factions each with capturable unique weapons
Research tree spanning 75 technologies across 7 doctrinal branches
Steam multiplayer, fortress raiding, and PvP battles
Retro pixel art with phosphor-green military UI
System Requirements
Will my PC run this? →Minimum
- OS: Windows 10 64-bit
- Processor: Dual-core 2.0 GHz (Intel Core i3 / AMD equivalent)
- Memory: 4 GB RAM
- Graphics: Integrated graphics, Intel HD 4000 or equivalent
- DirectX: Version 11
- Storage: 500 MB available space
- Sound Card: DirectX compatible
- VR Support: Not supported
Recommended
- OS: Windows 10/11 64-bit
- Processor: Quad-core 2.5 GHz+ (Intel Core i5 / AMD Ryzen 5)
- Memory: 8 GB RAM
- Graphics: Integrated graphics, Intel UHD 620 or equivalent
- DirectX: Version 11
- Storage: 1 GB available space
- Sound Card: DirectX compatible
- VR Support: Not supported
Supported Languages
Latest news
Patch NotesOfficial
Dig & battle fixes — single-tile dig, miner charges, drone defenses
Build 24324877 Dig & mining • Digging again opens one rock tile only (no more clearing the tile below by accident in Single Player). • Terrain layout is resynced when you leave the menu / enter dig mode so dig holes line up with the grid. • Miners again walk out, plant dynamite, retreat, and detonate (same flow as Sandbox). Battle • Fixed player drones being shot down by your own SAM / Trophy systems (friendly-fire). Enemy defenses still intercept your drones as intended. Stability • Layout refresh after menus/toolbar so build and dig stay aligned after opening the main menu. Thanks for the reports — keep feedback coming if anything still feels off after this build.Read full article on Community Announcements (Vidar)Patch NotesOfficial
UI readability update
Font size was effectively hard-capped, so changing resolution or full-screen/windowed didn’t make the text larger. That’s fixed in the latest build: • UI text now auto-scales on higher resolutions (including 1440p and 4K) • Base UI text is larger overall so the pixel font stays readable • Options → Interface → Text size if you still want it bigger or smallerRead full article on Community Announcements (Vidar)






