I'll give this game a 5-star. My only caveat is that when you go to the arena at low levels you can choose what level you wish to participate in. If you are at level 25 and feel you need to grind you can go back to 20 or whatever. Once you get to Survival mode it takes you to your last checkpoint, you don't have the option of going to a lower survival level to grind. I am currently at level 195 but thought the option to go to a lower Survival Mode level to grind would make the game better. I think a lot of people just quit when they can't grind at a lower level. You need the option to work on different strategies and most people don't like to grind if you constantly die. The solution to that is the ability to grind at a lower level and then be able to see if you are stronger to advance but this game currently lacks that.