Pokemon GO released in 2016 and instantly became a cultural phenomenon. Groups of strangers all gathered to play together, running around public areas to catch Pokemon. The thing is, the quest to "catch 'em all" was much easier in 2016, as the game included only the first generation of Pokemon. This generation introduced 151 Pokemon, and GO had less than that due to the game's legendary Pokemon releasing months later. Nearly six years later, developer Niantic just introduced Pokemon from Sun and Moon, the series' seventh generation, into the game. When the generation finishes rolling out, players will be able to obtain 809 different Pokemon species within Pokemon GO.