There’s this site that allows for any picture to be transformed into a digital puzzle. For free. And you can play for free.
I used it for the cover of Assassins! Accidental Matchmakers (see that puzzle here) and Crushing It (see that puzzle here)
And now, here is the puzzle for Monsters! Incidental Wedding Guests
Monsters! Incidental Wedding Guests by Jen and Éric Desmarais is available now!