Everything! the pity system that makes it not a waste of time. the fact that all operators are treated with value, even the 1 star... which means it does not rely on whaling high class operators. The connection also of the operators towards us... and even the graphics, music, sound effects, skills... it's a very well-done game.
Its a good game. A TD with ok graphics. Its just very hard to get some characters without spending and the early game is pretty boring. It gets better over time so dont shove it aside so early.
Update Note -This is a mandatory update, after which you should download and install the app again manually. Please log in and bind your account to at least one third-party account before the update if you are currently using a guest account to play the game. Update Content -Preload New Event -Improved Localization Quality -Improved Gaming Experience