Lets do a tier list about our favorites gacha games, i'll start with mine, this tier list do not mean that these are the best games in the world, just my favorites and the ones that I think they worth to play it at anytime.
Arknights
Priconne [2 weeks playing it actually and i can't stop!]
3. Azur Lane
The Seven Deadly Sins: Grand Cross [I know a lot of people hate the company that bring it to global, but the game is really fun]
DFFOO
Another Eden
Dragalia Lost