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Bunker Builder is a fully modular 3D environment kit for creating massive underground survival bunkers, sci-fi labs, and military bases. It features seamless interiors, exteriors, and detailed props.Render Pipeline Disclaimer:This package was created as HDRP. URP file included.If you want use URP, you can import it.🕹️PLAYABLE DEMO MAP🏗 Build Massive Underground Survival BunkersCreate fully realized underground facilities designed for survival, military, and sci-fi worlds.Bunker Builder gives you everything needed to construct believable underground complexes including modular corridors, control rooms, industrial machinery, greenhouse areas, and fully detailed interiors.Perfect for building hidden bunkers, research labs, underground cities, or secret military installations.The kit focuses on modular flexibility, believable infrastructure, and fast world building, allowing you to create large environments without repetitive assets.🧱 Fully Modular Bunker Construction SystemConstruct complete bunker networks using a flexible modular architecture system.The kit includes corridors, structural supports, walls, floors, ceilings, and doorway modules designed for clean grid snapping and fast assembly.This allows you to easily build:• Large underground bunker facilities• Long interconnected corridor systems• Multi-room bunker layouts• Secure underground installationsThe modular design allows you to rapidly prototype layouts and expand environments without rebuilding from scratch.🏢 Multi Room Facility LayoutsDesign believable underground facilities with rooms dedicated to different functions.Examples include:• Storage rooms• Operations centers• Industrial maintenance areas• Command and control rooms• Living quarters• Greenhouse environmentsThese spaces help create environments that feel functional rather than decorative.🌍 Seamless Exterior and Interior Bunker DesignThe pack includes a complete exterior bunker kit designed to work seamlessly with the interior modular system.This allows you to build fully connected environments where players can move naturally from the outside world into underground bunker interiors without visual breaks.Create locations such as:• Hidden bunker entrances in desert environments• Military surface facilities connected to underground corridors• Research outposts with subterranean complexes• Abandoned survival shelters buried in the landscapeThe exterior pieces are designed to match the interior architecture, making it easy to create cohesive above-ground and underground environments within the same modular system.⚙ Industrial Infrastructure and Mechanical SystemsUnderground facilities rely on heavy infrastructure. The pack includes a wide range of industrial elements to support realistic environments.Examples include:• Large pipe systems• Ventilation ducts• Mechanical machinery• Structural beams• Maintenance platforms• Industrial stair systemsThese assets help create environments that feel engineered and believable.🧰 Large Prop LibraryPopulate your bunker with detailed props designed to make spaces feel lived in and operational.Included props such as:• Control consoles• Storage crates and pallets• Laboratory equipment• Industrial containers• Workstations and furniture• Technical equipmentThis allows you to quickly transform empty bunker rooms into believable environments.🖥 Command Center and Control Room AssetsCreate operations centers and mission control rooms with a dedicated set of control room assets.Includes:• Command consoles• Wall mounted screens• Data displays• Control panelsPerfect for building security rooms, monitoring stations, and facility control hubs.🌱 Greenhouse and Survival SystemsThe pack includes assets designed for long-term survival environments.Build underground greenhouse areas and food production zones that support the idea of a self-sustaining bunker.These elements are ideal for survival games or story-driven underground settlements.🧩 Designed for Large Scale World BuildingEvery asset is designed to work together seamlessly so you can easily create:• Post-apocalyptic bunkers• Military underground bases• Secret research facilities• Underground survival colonies• Sci-fi shelter complexesYou can build small interior levels or massive bunker networks using the same cohesive modular system.🎮 Perfect For These Game TypesBunker Builder is ideal for developers creating:• Post-apocalyptic survival games• Sci-fi exploration games• Horror facilities and underground labs• Military bunker environments• Secret research bases• Underground story-driven levelsThe modular structure allows both small indie projects and large worlds to be builtefficiently.⚙ Key Features• Fully modular environment kit• Clean grid snapping architecture• Large library of environment props• Multiple example scenes included• Flexible reusable materials• Optimized assets suitable for real-time environmentsDisclaimers*Renders and showcase were recorded in HDRP project.*Product can be used in your commercial projects.CONTACT US WEBSITE | Need Support? JOIN US DISCORDNumber of Meshes: 252Number of Prefabs: 271Collision: Yes,usually generated in Unity(Box and Mesh Collider).Vertex Count: 2 (SM_D-Logo) - 81K (SM_BigEngine)LODs: (Yes, up to 5)Number of Materials: 41Materials: This asset contains PBR based materials which means each material contains a Base Texture, and a Normal Texture by default and additionally has Smoothness, Ambient Occlusion, Metalic and Opacity Texture Maps according to the material.Texture Map Types: Base Color / Diffuse, Normal, Smoothness / Roughness, Metalic, OpacityNumber of Textures: 116Props: Basils, Bed, Cabinet, Cans, Chair, Crates, Monitor etc.[Diffuse, Normal, Roughness, Opacity, AO, Metalic]Texture Resolutions: (1024x1024,2048x2048,4096x4096)Supported Development Platforms:Windows: (Yes)Mac: (Yes)Render Pipeline Disclaimer:This package was created as HDRP. URP file included.If you want use URP, you can import it.