Easy Design - Editor Level Design Tool

Tired of dragging prefabs one-by-one into your scene? Easy Design turns Unity's Scene view into a full level design suite — brush, array, path, shape, wall, manipulate, and more — all from a single unified tool. Stop fighting the editor and start designing.

Key features at a glance

• 5 placement modes + grid snapping + object-surface grids + slope-aware surface snap
• Path, shape, and array distribution with multi-prefab weighted pools and deterministic seeds
• Wall mode — modular anchor-chain placement with corner alignment and Lap Joint
• Brush / marquee / click selection with advanced filters
• Unified Transform Layer (G/R/S) for quick move, rotate, scale in every mode
• Non-destructive scene manipulation (extend, mirror, randomize)
• Instant prefab creation and cached copy workflow
• Replace any object with another in a single click — with hover preview

What's inside

Placement modes

Five placement strategies — Single, Serial, Bulk, Brush, and Wall — cover every scenario from precise one-off placement to modular anchor-chain building. Snap to world space with Grid mode, or use Object Reference Grid mode to divide any object's surface into a grid and place props directly on top of it. Surface Snap now supports an Object Reference mode with Align to Slope, so prefabs sit correctly on ramps, stairs, and uneven terrain. The built-in Replace feature lets you swap one object for another with a hover preview and Reference Point alignment (Bottom / Center / Top). Optional Auto Mesh Collider drops a convex collider on placed prefabs that lack one.

Placement controls — while placing, press G for free movement, R for free rotation, S for free scaling, Q/E for snapped rotation. Single-press for fine control with Unity's gizmo + keyboard nudge, double-press for mouse-follow Free mode. Lock to X/Y/Z axes, switch between Group and Individual pivot — everything happens right in the Scene view, no inspector roundtrips.

Wall mode

Modular anchor-chain placement for walls, fences, and stacked boxes. Place a seed prefab and slot wireframes appear on its free faces; click a slot to chain forward. Smart corner alignment, Lap Joint corner overlap, Overlap Check, session memory (double-click any past wall to make it the new anchor), and Ctrl+Z anchor rewind.

Path mode

Distribute objects along a custom path — perfect for fences, road props, tree lines, or anything that needs to follow a curve. Multiple prefabs with weighted pools and deterministic seeds, plus Object Snap (Ground) so each item rides uneven terrain individually.

Shape mode

Arrange objects into a chosen shape, and optionally fill the interior. Great for circular arrangements, rectangular formations, and structured set dressing. Surface Reference modes (Mouse / ShapeObject) make ring and frame layouts wrap around objects on uneven terrain.

Array mode

Populate a selected area with objects arranged in a clean, ordered layout — ideal for repeating elements across large spaces. Multi-prefab weighted pools with deterministic seeds, and an optional Ground Target restricts the array to a chosen scene object's footprint.

Eraser mode

Single and Brush variants, combined with a rich filter system, let you isolate and delete exactly the objects you want — no more accidentally nuking the wrong prop.

Selection mode

Click, Marquee, and Brush selection, all powered by the same advanced filters. Pick out exactly the set you need, then act on it with Q/E/R/S/G transform shortcuts, axis lock, and Group/Individual pivot mode.

Manipulate mode

Work with objects already in your scene:

• Extend — extend selected objects in any direction, as far as needed
• Mirror — generate a mirrored version of your selection
• Random — assign randomized values within user-defined ranges to transform properties
• Create Prefab — convert selected scene objects into prefabs instantly
• Cached Copy — treat any scene object as a placeable unit in Placement mode, no prefab conversion required

Prefab Browser

Folder navigation with async thumbnails, debounced search, and native .fbx / .obj model support — drop models in as Model Prefab Instances or Convert to Prefab right-click.

Compatibility

Built and actively developed on Unity 6.x, with verified compatibility on Unity 2022 LTS. Every mode has been tested across both versions.

Support & feedback

Your feedback drives this tool. Bug Report and Contact buttons are built right into the tool header (and Tools > Easy Design > Help), so reporting an issue takes one click. Bugs get fixed fast, and feature requests shape the roadmap. Nothing matters more to us than the comfort and productivity of the people using Easy Design every day.