Then there’s the new Game Key Card introduced with the Switch 2. This sort of lies in the middle of the two previous options as it comes with a cartridge but it does not come with the full game ...

The card-based, narrative-driven RPG Sultan’s Game just dropped its latest update alongside new DLC. There’s new story content, a downloadable soundtrack, new cards, and the base game is on ...

How to use Virtual Game Cards When you purchase a digital game from the Nintendo Switch eShop or redeem a code from a retailer, your game will be loaded on your system as a Virtual Game Card. Once ...

Why a particular game may use a Game-Key Card instead of a regular Nintendo Switch 2 game cartridge is unclear, but a page on the Nintendo customer support page breaks down how it will all work.

Thus, the game cards shouldn't be compatible with the original Switch due to Switch 2 enhancements. Rune Factory: Guardian's of Azuma's Steam page states that the game takes up 20GB of storage.