This plugin will let you add fog of war system into your top-down or rts games. All the functions are static which means you can easily access the functions from anywhere in Blueprints or C++. I haven't tested this in multiplayer as this system was primarily designed for single player game.

Want to see this in an actual game? Check this out.

Showcase Video: https://youtu.be/wkduhCnZbPc

Join Discord: https://discord.gg/Zmd2EGcfz2