Google Play is the single largest source of Android apps around, bigger even than Amazon’s Appstore, so being able to use the store and get apps from it greatly increases the amount of content available to download.
The nabi 2S comes with Google Play pre-installed on the tablet, so apps and other content can be acquired from it.
These apps will need adding in Mommy/Daddy Mode, as children do not have unrestricted access to apps in Google Play from nabi Mode, to prevent them from downloading something age-inappropriate or from racking up a large bill from buying apps.
Once added, the apps can then be made available for children to use in nabi Mode.