Hm a long while back one of our team members made a minimap extension Minimap extension beta - Arcade - Microsoft MakeCode (but that’s quite a while back), and there’s one on raycasting for only having line of sight Help and Questions - Arcade / Help - Microsoft MakeCode, but I don’t recall any specific ones closer to a ‘fog of war’ that only reveals as you get there but stays revealed right away 
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