"there haven't yet been any examples yet of using a fake radio program or a video game as a cover-up for crimes in fiction"
As a matter of casual interest, there is a detective novel in which the murderer, a playwright, uses a real radio program as a cover-up for his crime: he writes the script so that his target has a death scene, which must, for technical reasons, be done in a separate studio from everybody else; then, at the appropriate moment, he sneaks into the studio and assists the authenticity of the death scene.
"there haven't yet been any examples yet of using a fake radio program or a video game as a cover-up for crimes in fiction"
As a matter of casual interest, there is a detective novel in which the murderer, a playwright, uses a real radio program as a cover-up for his crime: he writes the script so that his target has a death scene, which must, for technical reasons, be done in a separate studio from everybody else; then, at the appropriate moment, he sneaks into the studio and assists the authenticity of the death scene.
That's not this trope, though.