There's the general chatters and the meme chat, and a smaller but active mobages chat. The general chat is often just joking about something, talking about games/sports, workouts, etc. Meme chatters are even more jokey and nothing there should be taken seriously. Please don't worry about their mental instability. Gacha players can come cry in mobages about all our losses, or flex your luck to make others cry.
For games, we have plenty of people who play FF14, OSRS, watch league esports, and new single player games
