There are six mobile titles that Sensor Tower is counting towards the total, but the bulk of the money - 98 percent - was earned by the most popular Pokémon title, Pokémon GO.
The other five titles that have brought in more modest amounts of revenue include Pokémon Shuffle Mobile, Pokémon Duel, Pokémon Quest, Pokémon: Magikarp Jump, and Pokémon TCG Online.
The United States has spend the most on Pokémon games, with total U.S. revenue coming in at 875 million, or 35 percent of the $2.5 billion number. Japan comes in second and accounts for 29 percent or $725 million of the total Pokémon game revenue.
Pokémon games have been installed by 640 million mobile users around the world since 2014, with Pokémon GO unsurprisingly making up the bulk of that with 550 million total worldwide downloads.