Often, download sites will offer an XCI (Switch Cartridge Image) or a "Multi-Content NSP."
New weapon types (electric batons, heavier pipes) and color-swapped enemies with unique attack patterns appear in Survival mode. Streets of Rage 4 Switch NSP UPDATE DLC
Like most modern games, Streets of Rage 4 received several post-launch patches. If you are using an NSP, applying the latest Update NSP is highly recommended. Often, download sites will offer an XCI (Switch