itch.io

emmmm,After you download it,There is a signal"＋" upward,After clicking it,There will be a choice called"adding game"(Because my version is chinese,So you need to find the meaning which is familiar with),then it will ask which file to use.Next,You need to find the film called the download(You just need to find out the place where you download your file-unknown adventure,So the procedure may not  be like  that I said)Click it and find the format which is end up with "game exe."

in the last you just need to click all the assurance

But there is wrong in the  picture of game,But it doesn't effect