All the crispy gamers will remember the good old fashioned NES cartridge games which you would slam into your trusty Nintendo Entertainment System and play games such as Battletoads, Bubble Bobble and Castlevania without the need of an Internet connection or a download. One PS4 owner has decided to mix Nostalgia with current technology by modding his PS4 console to play games off of a NES style grey cartridge. Using an Ultimaker 2 3D printer, Frank Zhao, electrical engineer and DIY hobbyist set about creating a NES cartridge replica. http://youtu.be/ftLXenKbBOI Read more about this PS4 mod here You can actually download the files needed to do this mod for yourself right here courtesy of Frank Zhao Click here to download
it is just a small hard drive with the game installed on it , only reason I see to power down to "swap" games still very cool tho