One of the biggest changes of Nintendo's generational leap to the Switch 2 is the new console's game carts. Per Nintendo, after players insert the game-key card into their console, they'll be prompted to download the associated game. Better Than Literally NothingProbably the biggest plus point to game-key cards is that they're an improvement on the current equivalent, which is … nothing at all. Switch cartridges are a proprietary storage format, which means they can be more expensive, per GB of storage, to release games on than mass-market media. Game-key cards go some small way to solving these problems.