The upgrade pack introduces several major technical enhancements over the original Switch One version:
: Improvements include more stable lighting, denser environmental detail, and sharper textures. Subnautica Below Zero Switch NSP (UPDATE) (eShop)
: The game now supports 1440p resolution when docked and 1080p resolution in handheld mode. denser environmental detail
Prior to the 2026 upgrade, several key patches addressed stability on the original hardware: Subnautica Below Zero Switch NSP (UPDATE) (eShop)