POLYONE – Modular World Builder (Lite) is a free Unity Editor tool for fast, manual placement and painting of modular prefabs.POLYONE – Modular World Builder (Lite) is a Unity Editor tool created to streamline manual modular world building.Instead of relying on heavy procedural systems, POLYONE Lite focuses on artist‑ and designer‑driven placement. Users can place or paint prefabs directly into the scene with clear visual feedback and precise control.Key highlights include:Manual Place and Paint modesQuick scale and rotation controlsHeight Offset to fix pivot alignment issuesOptional hierarchy grouping for clean scene organizationThe Lite version is fully usable for small scenes and prototypes, offering a fast and intuitive workflow while maintaining professional production standards. It serves as both a practical free tool and an introduction to the POLYONE ecosystem.Contact me for support. Hope to receive feedback from everyone. Thank you very much.Editor Tool (Not runtime)Unity Version: Unity 2021.3 LTS or newerRender Pipelines: Built‑in, URP, HDRPSupported Platforms: Editor‑only (tool does not add runtime overhead)Core Features (Lite)Manual Place Mode (click to place prefabs)Manual Paint Mode (continuous placement)Height Offset (±Y) for pivot correctionALT + Scroll: Scale adjustmentALT + Middle Mouse: Rotation adjustment (Y axis)Automatic hierarchy parenting (optional)Limitations (Lite)Single active prefab selectionNo random prefab variationNo advanced paint undo groupingLimited to small‑scale or prototype scenesUpgradeThe Pro version unlocks advanced workflows such as random prefab variation, multi‑collection management, and enhanced state control.
