The Big Castle Kit is a Unity-ready 3D environment pack featuring modular castle pieces for building detailed medieval structures. It includes walls, towers, gates, stairs, roofs, and decorative props with optimized low-poly geometry and PBR materials. Fully compatible with URP and mobile-ready, the kit allows flexible assembly for interior and exterior designs. With modular prefabs, customizable textures, and scalable layouts, The Big Castle Kit enables developers to quickly create immersive castles, fortresses, and fantasy environments for games and simulations in Unity.