Bring next-generation base-building mechanics to your project with Building System Pro, a fully modular, performance-optimized construction system inspired by Sons of the Forest. Featuring real-time placement previews, snapping logic, progressive construction, and full multiplayer support, this system is ideal for survival, crafting, and sandbox games.

Built entirely in Blueprints, Building System Pro is clean, scalable, and ready for production — built for developers who want professional-quality building mechanics without the complexity.

Key Features

• Advanced Building System – Place, rotate, and snap structures with precision using a powerful placement preview system. Supports grid snapping, slope detection, and wall or ground placement.

• Real-Time Placement Preview – Instantly visualize placement validity with ghost materials that change color based on collision checks and terrain conditions.

• Progressive Construction Workflow – Players gather and apply materials to advance building stages until the structure is completed.

• Data-Driven Architecture – Add new buildings and materials in seconds using Data Assets. No additional Blueprints or scripting required.

• Optimized with Instanced Static Meshes (ISMs) – Built around instancing for maximum runtime efficiency and minimal draw calls, allowing hundreds of placed structures with minimal performance impact.

• Final Mesh Replacement – Automatically replaces ISMs with a single static mesh when construction is complete, ensuring realistic collision and optimized rendering.

• Full Multiplayer Support – Designed for seamless online play; all placement, building progress, and completion events replicate correctly across all clients.

• Flexible Placement Validation – Uses advanced trace and critical-point logic to prevent floating or clipping structures while allowing configurable placement tolerance.

• Fully Customizable Settings – Adjust grid size, slope limits, rotation step, and maximum build distance directly from the AC_Building component.

• Easy UI Integration – Comes with a ready-to-use construction book and material selector. New entries automatically populate when added via Data Assets.

Why Choose Building System Pro?

• Inspired by AAA Design – Brings the intuitive and polished building experience of Sons of the Forest to your Unreal project.

• Highly Modular – Perfect for survival, crafting, and base-building mechanics in open-world or multiplayer environments.

• Fast Integration – Built entirely in Blueprints for drag-and-drop implementation with clear internal documentation.

• Performance-Focused – Designed around ISM efficiency and minimal tick overhead for scalable world building.

Bring Your World to Life

Give your players the freedom to build and shape their world.
With Building System Pro, you’ll create immersive, flexible, and high-performance base-building mechanics that feel and look AAA.

Get Started Today!

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Watch the System in Action

Documentation

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