What better way to show your support to Nintendo by getting iPhone 4 cases which are supposed to look like the behinds of retro Famicom and NES cartridges?

These cool covers were designed by gamer shop Meteor and even come with warnings on what not to do with the cartridges! How cool is that?!

The only maybe slightly uncool reality of these covers is that they will cost you ¥4,800 (US$57). It certainly isn't cheap to go retro. But it definitely is worth it if you're a Nintendo geek.