Switch comes with 32G memory. If you use cassette games, then this 32G memory is generally used to store game records, screenshots and so on. , completely enough.

If you play physical cassette games, but download digital games, this 32G memory can probably store 2 ~ 3 games (different game capacities are different, for example, Zelda Wilderness is more than 10G, so two games like Zelda are basically packaged in their own memory). Under this premise, if you only buy one or two games, you don't need to buy a memory card. You need to add a memory card to buy five or six games, otherwise it won't fit.