In order to create smooth voxel-based terrains, it is essential to comprehend and resolve Marching Cubes mesh creation challenges in Unity. Dealing with holes in the mesh is a frequent problem that frequently arises from inappropriate handling of density variables or faulty triangulation. This guide explains how to incorporate performance enhancements such as GPU acceleration and adaptive resolution, optimize the algorithm, and use debugging tools. Developers can guarantee seamless, aesthetically pleasing terrain generation in their projects by adhering to best practices.