The Top Grossing chart ranks games by total revenue — combining paid downloads and in-app purchases — making it the best measure of which games are actually making money. The United Kingdom Google Play is one of Europe's most active app markets, reflecting a highly engaged and diverse user base. Merkur24 – Slots & Casino made the biggest jump, climbing from #34 to #31; Cash Frenzy™ - Casino Slots holds a steady position at #1, where it has charted for 131 days.