Once a year a Japanese video game shop called Meteor puts together an exhibition of Famicom carts. The interesting thing about these carts is that they are for games that were never made. A consortium of Japanese graphic artists and design firms contribute to create cart-stickers for the best imaginary games they can think of. Every year I am consistently blown away by the depth of creativity of some of the submissions.
Below is a small selection of carts that caught my fancy. Go to the Famicase site for the full gallery.