ancient mud-brick stupa 3d model

Create a realistic 3D model of a Mohenjo-daro style ancient mud-brick stupa. Use a large circular raised platform with stepped brick tiers, a broad hemispherical dome, and a simple small circular crown structure on top. Include weathered baked-brick textures, symmetrical proportions, solid construction, subtle ancient wear, and authentic Indus Valley architectural styling. Single structure only, centered, isolated on a plain light-gray background, no people, no vegetation, no text, no surrounding buildings, clean geometry suitable for game use.