These are card designs for a sadly discontinued game called TRAITOR.
Comedians Dave Anthony and Greg Bherendt used to have a very funny podcast where they essentially had a collective nervous breakdown every week, and would usually toss out at least one brilliant idea for a show or film. This is the album art of the soundtrack to what would likely be a great movie.
Below are header images for short stories set in the world of my sci-fi graphic novel, GANG OF FOOLS.
Postcards! I guess? I don't think they're usually square.