Do you have to a memory card download games on dsi?

No, you don't need a memory card to download games on a DSi.

Here's why:

* DSiWare: The DSi Shop offers downloadable games called DSiWare. These games are stored directly on your DSi's internal memory.

* Internal Memory: The DSi has a small amount of internal memory that can be used for storing DSiWare games, save data, and other files.

* Memory Card (Optional): A memory card is optional but highly recommended. It allows you to store more DSiWare games, save data, and other files, as the internal memory is limited.

In summary:

* You can download and play DSiWare games on your DSi without a memory card.

* However, a memory card is recommended for storing more games and data.