On a Nintendo Switch, why don't parental controls kill the game when the time limit is up?

Solution 1:

The app for your smart device should be able to interrupt game play according to its listing on the Google Play store:

It is also possible to suspend gameplay automatically when the play-time limit is reached.

This is also inline with what Nintendo Support pages say in the table found on this page.

According to this guide, you can use the Suspend Software feature in the app to stop the game:

  1. Open the parental controls app.
  2. Tap Console Settings in the upper-right corner. Create a PIN that only you know and your kids can't guess.
  3. In Console Settings, tap Play-Time Limit. Set a daily limit (up to six hours) on the amount of time your kids can play.
  4. You have the option of shutting down the device when your kids reach their daily limit by enabling Suspend Software. Otherwise, kids just get a notification that they've reached the limit but can still play.

Screenshot of the feature from Nintendo Support Video:

suspend software