On the Switch Home screen, there are only 12 boxes in the game menu. Does this mean that only 12 games can be installed on a Switch?
You can have more than 12 games installed on your Switch, but only the 12 with the most recent activity will show up on your Home Screen.
As soon as you hit your 13th game, a new icon will show up called "All Software".
This will let you browse through all of your games in a grid, rather than a line.