If we want to mix the game characters of different works together, we must try our best to integrate the world outlook of different works. One of the most common practices in today's mashup games is to build a world outlook on its own, but there have been accidents like "time and space distortion" in the world, so warriors from different worlds have been summoned together. Think about it carefully. Isn't that true for Street Bull X Tiequan, Isu VS Air Trajectory, Unmatched Snake and Professor Leighton X Reverse Referee? This setting is so tortuous that it is difficult to provide players with the most basic sense of participation, but there is really no more clever way to connect works of different styles. The limitations of play and world outlook make it difficult for mashup games to get rid of the shackles of the original, but this will not prevent it from continuing to be popular for quite a long time in the future. In the major game forums, you can hardly see any players complaining about the imprecise setting of the Mashup game, and few people will compare it with the original one. In the future, it is hard to imagine the demise of Mashup games as long as players still like to be real just as lahasoft.com mentioned, continue to like fantasy, and as long as game makers are willing to cater to the needs of players as always.