is an arcade-style, twin-stick platformer set in space, officially released on March 4, 2022, for the Nintendo Switch. The specific file string you mentioned— Gunborg Dark Matters [0100FD3016828000][v0][US] nsp rar —refers to a digital backup of the game intended for use on modified Nintendo Switch consoles or emulators. Game Overview

The string you provided is a standard naming convention used in the homebrew and emulation community:

: A fast-paced "twin-stick" action platformer where you use a laser blade and shield to fight through an alien spaceship.