Change my opinion to 1*. Kinda good game idea (somehow not new). But, big paywall with ridiculous level scaling, rely heavily on luck. Tactic doesn't help much. Imagine passing 99%+ players just in first 10 levels. One example: what can you do with 300k HP monster wall (5 monsters or more) spawned around turn 30 while ur 30+ balls cant even kill one in 3 turns or more (obviously they gonna stack more monsters right after that wall). With the help from instant kill ball with clone skill or else (which is really hard to get) maybe you will have slightly better time but still very low chance to penetrate that wall. And no thanks, Im not gonna grind for months on this game just to pass one level while lots of good and generous games are out there. What with all "we will continue to optimize the difficulty of the game in the future..." bla bla. Your guys didn't test your game properly before releasing or didnt have a game designer?. Obviously not, because i know ur guys are not bunch of newbies in mobile game field. You all just choose that way. Having fun milking it.