3 [0100c2500fc20800][v655360][us].nsp ... - Splatoon

corresponds to Version 10.0.0 , which was a major update released on June 12, 2025.

: Specifies that this file is from the North American region . Splatoon 3 [0100C2500FC20800][v655360][US].nsp ...

: The file extension stands for Nintendo Submission Package . This is the standard format used for digital titles (eShop games), updates, and DLC. Key Features of Version 10.0.0 (v655360) corresponds to Version 10

: This indicates the update version of the software. In the Switch's internal versioning system, the base game is v0 . Updates are incremented in multiples of 65,536 ( 2162 to the 16th power corresponds to Version 10.0.0