I have just done the latest Win 10 1803 update on my wife's laptop. In the list of installed programs I found Bubble Witch Saga, Candy Crush Saga, a Disney program and one other Dungeons & Dragons type of program.
She is absolutely adamant that she has not downloaded or installed any of these, got rather angry when I mentioned it.
She is not the best when it comes to tech so how can she have done this without knowing?