"Cartridge games" refers to video games that are stored on small, removable cartridges or casings. These cartridges contain all the necessary data and instructions for playing the game on a console or handheld gaming device. Full definition
Nintendo announced the 64DD as a way of combating the high price of cartridge games as well as rivaling Sony's Playstation for raw memory space. (blog.pricecharting.com)
The case looks fine, but it's a complicated system for you to then be able to play cartridge games on your phone. (techradar.com)
Sticking with the Retro Gaming console options, if your Dad would prefer to play the original cartridge games rather than emulated ROMs, then the Super Retro Trio by Retro Bit could be perfect for him this Father's Day. (16bitdad.com)