Sandcastle

A bucket-built sandcastle on a 0.8 x 0.8 m base; build 0..1 runs from a single slumped upturned-bucket turret to a four-turret keep with crenellated tops, a shell-studded curtain wall, a dug moat and a stick flag.

风格：low-poly, flat-shaded vertex colors, no textures, single shared material, so any set of these merges to one draw call; shares palette and scale with its kit