VaFogOfWar implements fast and optimized fog of war solution for topdown games like Dota, StarCraft or League of Legends. It fast enough even to work on mid-end mobile devices, so it works like a charm on desktop.

- Three types of layers: current visibility, global visibility (permanent from black), terrain
- Eight height levels supported (river, lowground, highground, etc.)
- Dynamic and static obstacles (trees, rocks, etc)
- Different types of radius strategy: circle, square and others
- Freeform fog blocking volumes as tool for terrain level painting
- Initial terrain levels can be set with heightmap

Marketplace: https://unrealengine.com/marketplace/en-US/product/vafogofwar
Gumroad: https://gum.co/TFflr
Github: https://github.com/ufna/VaFogOfWar
Documentation: http://bit.ly/VaFogOfWar-Docs