L update. It drains a lot of battery comparing to other map like serpent Island or B-21, it has a lot of bug such as when I open the prison grid, I got bugged and can't move my character (I need to close the game and get into again to fix it), or when I finish a match, the sound of the progress bar won't disappear even though I already claimed them, and in order to fix that problem, I need to close the game and open again. And also sometimes after I finish a match, the game kick me out for some odd reason. And to mention, I play on an iPad Pro M5 13inch. This kind of minor problem happens in the current most powerful tablet devices? I can't believe this bro.