The phrase "popular genre" refers to a style or category of something (such as music, movies, or books) that is liked, enjoyed, and followed by a large group of people. Full definition
The shooter genre, particularly first person shooters, is one of the most popular genres in video games. (jamiex66.com)
Probably the most popular genre in gaming, shooters are more complicated than you think, especially when you play versus human opponents. (software.informer.com)
As two of the most popular genres of games, fighters and RPGs couldn't be further apart... until now. (crunchyroll.com)