The game is frequently hosted on sites like Ziperto and documented in various Title ID databases . Souldiers Switch NSP [Update] (eShop) Download - Ziperto
The file is a compressed archive containing the base game for Souldiers on the Nintendo Switch. File Metadata Breakout Game Title : Souldiers Souldiers [0100439016FF6000][v0][US].nsp.rar
.nsp : A standard Nintendo Submission Package format used for eShop titles. The game is frequently hosted on sites like