siege cannon 3d model

Dark fantasy cannon tower, elevated heavy siege defense structure for tower defense gameplay, massive stone base with worn steps and reinforced corners, thick wooden support frame with iron braces and bolts, rotating upper carriage holding a huge iron cannon with brutal medieval war-machine design, recoil braces, loading hatch, heavy barrel rings and reinforced mount, clearly readable as a siege cannon and distinct from a ballista, broad powerful silhouette from top-down view, compact but heavy proportions, stylized realistic game-ready 3D model, centered object, isolated on neutral background, no characters, no text, no watermark, no UI