Kenny Asset Forge 2.4.1 (Win/macOS/Linux)

How it works
There are currently over 900 pre-made blocks available, which are categorized into different sections. You can place an unlimited number of blocks in your creation, which can then be exported and used in any game engine you choose.
Position, rotate, mirror and resize blocks
Export to common 3D file formats (see below)
Render your model as a 2D sprite
Apply colors, materials and textures
Batch export a sprite in multiple directions
The exported models are compatible with most game engines including Unity, Unreal Engine, Blender and ThreeJS. The 2D sprites (PNG) are compatible with all game engines that support sprites.
Home Page-

https://kenney.nl/tools/asset-forge