Yes, you need physical Game Cards for most 3DS games. The 3DS does not mandate digital-only.
| Method | How It Works | Availability |
|---|---|---|
| Physical Game Card | Insert cartridge → Play. Save data on card (mostly) or SD. | All retail titles (2011-2020). New/Used. |
| Nintendo eShop (Digital) | Buy/download to SD Card. Save data on SD. | Most retail + indie/VC. Shop closed March 27, 2023. Redownload only. |
| DSiWare (Legacy) | Buy on DSi Shop (closed 2017) → Transfer to 3DS. | ~200 titles. No new purchases. |