Unreal Engine - Ultra Volumetrics:
Ultra Volumetrics is a powerful tool for creating visually dynamic, game-ready volumetric fog effects with high performance. It features customizable fog presets, the ability to paint and animate fog with splines, and interactivity with players and physics objects. The tool allows for distance field-based fog that clings to surfaces, self-shadowing, and scattering effects. Users can adjust fog color, control fade effects in both first and third-person views, and use a randomization function to easily populate levels with fog effects. Additional features include a quality settings editor, overlap events, and the ability to mix multiple fog volumes, making it highly versatile for scene enhancement.