I am trying to make experiment gui and sword but the problem is whenever i play it in private i can't see those gui and sword in roblox game but in roblox studio i can see them so i am wondering how to fix this problem or is it just a bug? please help and thanks for reading it!
Did you try putting your gui under a "ScreenGui" in StarterGui and your sword inside StartPack? If so, publish/save your work and try it inside your game. Hopefully this helps.