Mesh Terrain is fully 3D, supports non-uniform resolution, and is powered by non-destructive modifiers.

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Epic Games has released early documentation for Mesh Terrain, a next-generation terrain system coming to Unreal Engine 5.8. Unlike traditional heightfield-based workflows, Mesh Terrain is fully 3D and supports complex landscape features like overhangs, tunnels, and sheer cliff walls without requiring uniform resolution. It uses non-destructive modifiers that can be stacked, duplicated, and transformed, enabling a more flexible and iterative development process. The feature is currently experimental in the UE5-Main branch on GitHub.

Unreal Engine 5's Mesh Terrain Early Documentation Released