At the time of writing, the Switch has the highest number of software sales of any Nintendo console, ever, with over one billion games sold on the platform since March 2017. What's more, its lead is so commanding that it will likely hold this pole position for a good few years to come (unless there is a sudden surge in sales for DS games around the corner that nobody saw coming).
Of all of the games available on the Switch, a select few have been able to make it into the elite club of surpassing one million units sold. This is a feat that has only been achieved by 65 first-party games as of March 2023, with titles ranging across the breadth of the Switch's lifespan, and recent additions including Fire Emblem Engage, Metroid Prime Remastered, and Kirby's Return to Dream Land Deluxe.