Google's application store. Images with this tag almost always refer to the presence of a Google Play Store [[gift card]], the logo of which is a multi-coloured [[play button]]. Commonly depicted in fan art of "gacha games":[https://en.wikipedia.org/wiki/Gacha_game] such as [[Fate/Grand Order]] and [[Idolmaster]], in reference to the money-spending aspect.

Apple has a [[itunes_card|gift card counterpart]] for their App Store.
google play