Previously, you had to unlock the Japanese versions via cumulative playtime. The update removes that grind, allowing you to switch between Contra (US) and Gryzor (JP) instantly from the game select menu.
The Ultimate Guide to Contra Anniversary Collection on Nintendo Switch: NSP, Updates, and Retro Mayhem Contra Anniversary Collection Switch NSP UPDATE
The for Nintendo Switch, originally released on June 11, 2019, received a significant free update shortly after launch that expanded its roster and features. Key Features of the Update Previously, you had to unlock the Japanese versions
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. Key Features of the Update This public link