While the temptation to search for an NSP version of a game that isn't commercially available is understandable, it carries significant risks that every gamer should be aware of.
Since Double Dragon Neon wasn't optimized for the Switch hardware natively, any "ported" NSP version is likely running via emulation or a wrapper. These methods often result in poor frame rates, audio glitches, and crashes. The experience is rarely on par with a legitimate port. Double Dragon Neon Switch NSP
The game frequently goes on sale for $4.99 USD on the eShop. For the price of a coffee, you get a 5–6 hour campaign with infinite replayability. While the temptation to search for an NSP
The dark corners of the internet where NSP files are traded are breeding grounds for malicious software. Downloading an executable file (which an NSP is) from an unverified source can brick your console, steal your personal data, or infect your computer. Because Double Dragon Neon was never officially an NSP, files claiming to be so are highly suspicious. The experience is rarely on par with a legitimate port