Claim: Pacman and Subway Surfers are paid-to-play games that both had 500,000 player counts in the 2010s, where that decade, Dungeon Fighter Online took the lead as the highest-grossing video game with gross revenue of $11,500,000,000.
Evidence: Dungeon Fighter Online
(DFO) $15 billion (as of 2020) 
Mario est. $32.4 billion (as of 2019)