According to the national statistic office, 95% of the population holds a smartphone in Korea. Such a reason, playing mobile games is very common over all ages.
10s~20s also play PC games, particularly, men's group play PC games more than mobile games.
For teenagers, male group play more PC games than the female while female group play more console than the male group.
Adults of 20~40s are playing more console games than teenagers. They are driving the market in Korea. KOCCA* published a paper saying that console gaming contributes only about 3% of the entire gaming market, but grow more than 20% in 2018.
KOCCA: Korea Creative Content Agency