Missing dll file

My computer seems to be missing a .dll file to play exe blender games. I’ve saved one of my games to a speciall folder with all the files needed, but for some reason it wants an avformat-51.dll, which I don’t remember it needing. Every time I try to start the runtime game it wants that file. Is there any place where can I download it specifically?

Thanks is advance.

re-install blender

Why not just give it what it wants…

just copy all the dlll’s it wants from blender’s folder…