Great game, a 3d visual novel with a hint of horror, which kept me on my toe throughout the game, though I will say the tower climbing at the end is really time consuming if you are hunting for all endings.
In response to the other comments about having no idea how to get the other endings, it's all about interacting with all the graffities.
If you just run through it, going straight through the torii gates, you will be able to get ending 3 or 4, depending on your choice at the end. But if you take your time looking through the graffities, you will get ending 1 or 2.
So I'm guessing it's a way of portraying if Maribel truly believes in Gensokyo that Renko tried to explain, and that in turn becomes the reality?
Also, the scripture is hardly readable, even if you are fluent in Japanese or Mandarin (because the developers are Chinese, I think). As someone who is fluent in both, I'm still struggling to even understand a complete sentence.
Still, an amazing game! (sry for the bad English, I'm not native to the language)
不同的结局跟看不看涂鸦有关系，涂鸦基本都看的话能拿结局一和二，不看的话能拿三和四，爬塔模拟器。