is a fitness-based rhythm game for the Nintendo Switch that uses Joy-Con motion controls to simulate boxing routines. The terms in your query, "NSP" and "ROMSLA," typically refer to specific digital file formats and third-party distribution sites used for running games on modded consoles. Core Gameplay Mechanics

The game focuses on rhythmic movement where you perform boxing actions in time with instrumental pop music. Fitness Boxing 2: Rhythm & Exercise (Switch) Review