Based on this site, it looks like there are just 15 games.
| Game | Availability | Notes |
|---|---|---|
| The Binding of Isaac: Rebirth | eShop only | |
| BlockForm | ||
| BRICK RACE | ||
| Dragon Fang Z: Ryuusha Rose to Yadorigi no Meikyuu | eShop only | A 2019 New 3DS port of the 2017 Switch game. |
| Fire Emblem Warriors | ||
| Futuridum EP Deluxe | ||
| Lifespeed | eShop only | |
| Minecraft: New Nintendo 3DS Edition | Both | |
| Pinball Hall of Fame: Williams Collection | ||
| Pirate Pop Plus | ||
| Pixel Hunter | ||
| Runbow Pocket | ||
| Silver Falls: 3 Down Stars | eShop only | |
| Wind-Up Knight 2 | ||
| Xenoblade Chronicles 3D | Both |
I only ask, because that console is selling used where I live for about 200-300, but the 3dsxl is only about 100 if you find a good deal usually around 120.
Yeah, the list of New 3DS exclusives is pretty short.
I am fairly sure that having a New 3DS does help with performance on some original 3DS games though.
The system will actually downclock when running titles that are not specifically flagged as N3DS enhanced. This can be overridden through softmodding though.