This is a paid asset, but now you can download Brutalist (Built-In) Free.
Detail this asset from Unity Store: Original Link
Brutalist (Built-In) v1.0
“If possible, please buy the package to support the developer”
◼ PRODUCT DESCRIPTION ◼
Create the architecturally controversial buildings and cityscapes that intertwine with the modernist movement, defined by rugged combinations of detailed concrete and glass, exposed construction, and a lack of concern for aesthetic comfort or ease. With this huge kit you can build sci-fi dystopias or detail modern cities with massive public buildings, bold monuments and unique tower structures!
Designed by Emmanuel Shiu, modeled by Julian Liao, and texturing by Julian Liao, with cover art by Emmanuel Shiu.
◼ A MESSAGE FROM KITBASH3D ◼
Proceed with creativity! You are about to purchase a 3D asset kit that includes elements to set the scene as you build your world, whether it’s for video games, film, television, design, or art. These completely customizable assets will serve as the building blocks to help you create an original environment.
◼ KEY FEATURES ◼
-41 Assets
-117 Meshes
-17 PBR Materials
-53 Textures
-4096×4096 Texture Maps
-2.7m Polys
◼ COMPATIBILITY ◼
– Works in Unity 2019.3.13 and above.
– HDRP/Built-In versions are freely upgradeable to Unity customers.
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 – Free Download){kind=link}