Sword Art Online: Alicization Lycoris is an action-RPG based on the Alicization arc of the Sword Art Online anime/light novel series. It was officially released for PS4, Xbox One, and PC; a native Nintendo Switch retail release was not produced by the publisher. References to a "Switch NSP" typically point to unofficial, pirated Switch game files (NSP) that allow installation on modded consoles.
A: Yes. Install Yuzu or Ryujinx on Steam Deck (via EmuDeck), transfer your legal NSP file, and play. Performance is decent at 30 FPS with low settings. Sword Art Online Alicization Lycoris Switch NSP...
Important Note: Downloading NSP files for games you do not own is piracy. This guide assumes you are using legal backups of a game you have purchased. Sword Art Online: Alicization Lycoris is an action-RPG