It looks like you’re referencing Assassin’s Creed: The Rebel Collection on the Nintendo Switch, specifically the NSP format (a common Switch digital release package) and possibly an “ext” (extracted or extended) reference.
Assassin’s Creed IV: Black Flag: Follows the story of Edward Kenway, a pirate in the Caribbean who becomes embroiled in the Assassin-Templar conflict. assassins creed the rebel collection nspext
Porting massive open-world games to the Switch is never easy, but the developers (Ubisoft Kiev and Virtuos) did a respectable job. It looks like you’re referencing Assassin’s Creed: The