Super-mario-maker_2-nsp-xci-update-3___40_1__41... Here

: These are file formats used for Nintendo Switch games. NSP is the format for digital eShop games, while XCI is an image of a physical game cartridge.

: There are papers proving that generalized Mario levels are PSPACE-complete , meaning they are mathematically "hard" to solve. Super-Mario-Maker_2-NSP-XCI-Update-3___40_1__41...

: Researchers often use Mario levels to test "Procedural Content Generation" (PCG) using machine learning. : These are file formats used for Nintendo Switch games

If this was a file you found online, be cautious, as files from unofficial sources often carry security risks. Super-Mario-Maker_2-NSP-XCI-Update-3___40_1__41...