In order to let players enter the payment link, the game will increase the difficulty in some specific levels, stimulate players' desire to win or lose, and then fax number database guide players to pay. However, excessive game level difficulty can lead to player churn. In response to this phenomenon, the author launched the following research, let us take a look. Our company has two elimination games with similar gameplay. The basic framework of the two games is the same, and they are called A and B in the text. Game B was released a year later. Compared with A, it has made innovations in the elimination method, and can combine more shapes to generate fax number database elimination props. I have experience with both games. The combination elimination of B is more interesting and flexible, but when I play the B game, I often get angrier the more I play - it is obviously a elimination game, I have only played more than 100 levels, and almost every level has to fail more than two or three times. And this kind of failure is obviously intentional - getting stuck in the last one or two steps to get players to pay (the payment rate is not as high as A), and the company's public opinion monitoring also found that many players reported that it is difficult to eliminate fax number database the level of the game with B. I can't help thinking: won't this simple and rough difficulty level accelerate player churn? Therefore, I want to compare the distribution of difficulty of different levels and the impact on player churn in the two games A and B. User portrait comparison Purpose: To compare whether the targeting user types and preferences of the two games A and B are consistent.