Pokémon Red/Blue/Yellow (1998)
Latest stats for the year reveal that Fortnite (Battle Royale) has been making hundreds of millions of dollars each month in revenue, for a total well in excess of one billion USD, with over 125 million total players. And I would conservatively estimate that it’s seen a total of two zillion game-hours total. The whole thing is a phenomenon, and even I tried it once. That’s right, I tried a modern and popular game, but I ought to quickly clarify that it was free.