What Is a Game-Key Card? As Nintendo explains, game-key cards are "your 'key' to downloading the full game to your system via the internet." They come in a case and include cartridges that slide into ...

CNET editor Gael Fashingbauer Cooper, a journalist and pop-culture junkie, is co-author of "Whatever Happened to Pudding Pops? The Lost Toys, Tastes and Trends of the '70s and '80s," as well as "The ...