Would like to know what this is made of? What kind of game engine is that? Or did you just do it graphically?非常想知道这是使用什么制作的？是什么游戏引擎嘛？还是直接使用图形化的方式制作的？
From what I remember I made the dithered texture effect in GIMP simply by using G'MIC filter called Transfer Colors [Reduced Colors]. It allows choosing a palette and offers various dithering options. I might have also used app.dithermark.com, I definitely experimented with that too. (And for programming I used heaps.io engine but I cannot recommend it due to some issues I had with it when exporting to various systems.)