There is no notable game developer or publisher called "Madou Media." If you remember that name from a game, it's almost certainly Mad Dog Games you're thinking of. If not, double-check the spelling or context.
In short: There is no widely recognized video game developer or publisher named "Madou Media." If you encountered this term in a gaming context, you have almost certainly confused it with another company, or encountered a misspelling/misremembering of a known entity. madou media game