I think you are asking mobile games in general
Most of them are simple game to play that are not too demanding of your time and high end spec.
You can play anytime and does not have to be stationary.
Plus, you have mic built in your phone so you can voice chat without needing to buy one.
So far I has played pubg mobile, mobile legends, summoners war, jrpg games, yugioh and several offline games.
Sad part is, if you are a streamer then you still need pc and mic although some allow you stream with screen only.
Another thing is there are quite a lot of child player that can be toxic and people that are playing during work so they might just go afk or leave the game midplay