Nintendo's Animal Crossing: New Horizons for the Switch is inarguably one of the biggest hits of "lockdown life". However, its mobile titles (Super Mario Run and Fire Emblem Heroes, for example) have not exhibited the same level of success, to the extent that the company allegedly has no new titles planned for this platform.
https://www.notebookcheck.net/Nintendo-shows-signs-of-giving-up-on-the-smartphone-gaming-market-altogether.477261.0.html