This brings us to the "NSP" part of your search. An "NSP" is a digital file format for Switch games, essentially a cartridge dump. A "patched NSP" of would refer to a file that has been updated to version 1.0.2 and might also include additional modifications created by the community.
For LEGO City Undercover , the verdict is clear: It remains one of the best Lego games ever made, brimming with humor and content. But on the Switch, the "patched" version remains the Holy Grail—a digital artifact that represents the hope that, with the right tweaks, the game can finally reach its full potential.
: Released immediately at launch, this initial 479MB patch corrected structural data errors and physical cartridge discrepancies. lego city undercover switch nsp update patched
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Once you are running the fully updated version of LEGO City Undercover, you can enjoy the full breadth of Chase McCain’s journey without technical distractions.
The launch version of Lego City Undercover on the Nintendo Switch suffered from severe technical hurdles. Loading screens between the city and police headquarters frequently lasted over a minute. Frame rates plummeted during high-speed car chases through Cherry Tree Hills. This brings us to the "NSP" part of your search
The patched version stabilizes the framerate closely to a locked 30 FPS. While minor dips still occur during intense explosions or high-speed multi-car pileups, the overall driving and exploration mechanics feel significantly smoother than the launch version. 2. Drastically Reduced Load Times
For those still hoping for a definitive high-performance version of , there is potentially good news on the horizon. In September 2025, a display at the Zurich Pop Con in Switzerland teased several LEGO games, including LEGO City Undercover , as being among titles that may receive updated versions for the Nintendo Switch 2 . This could finally be the chance to play the game with stable performance and faster loading times. For LEGO City Undercover , the verdict is
Subsequent data patches altered the game's file distribution structures: