sci-fi scrap arena 3d model

Stylized top-down sci-fi scrapyard arena for a mobile defense game, dark graphite metal floor, modular square metal panels, visible seams, bolts, scratches, subtle rust stains, clean readable design, central empty area for a base, edges with metal borders, scattered small scrap decorations, not too noisy, not pixel art, polished mobile game look, orthographic top-down view, Unity game asset, no text, no logos.