I made a game for our wedding-website. The player has to control her and me simultaneously. It's pretty short, though. I did everything myself, graphics, music, gameplay.
A funny anecdote: Some years ago, a person asked me if it would be ok to modify the game for the wedding for his friend. They wanted to play it at their wedding as a joke. At first I didn't know what to say, but then he told me he already downloaded it and modified all the animation-spritesheets by hand, to match the look of the couple. He must have spent hours on this. I thought that was so cute that I gladly allowed him to do whatever he wanted with this. I even offered him to re-export the animations, but he already was done by then.