Curved World is not Image Effect. It's simple, but very powerful per mesh material shader effect.
Curved World curvature means - objects rendering as being bended only inside camera view, while their world space parameters: position, rotation, scale are not changed or modified. Because of this Curved World does not disturb any of game elements like: physics, animation, AI, path finding and other mesh transformations.
Curved World is highly optimized for mobiles and contains: Unlit, One Directional Light, Matcap, Mobile Terrain (similar as T4M) shaders.
Curved World offers shaders for high-end devices with: Standard, Legacy, Unity Terrain and Nature, Water, DX11 Tessellation shaders.