Shan Gui is a kinetic visual novel, so expect it to be wordy with no true "gameplay". Like the description states, Shan Gui is flat; there are no choices or decisions that alter your ending, thus having no "replay value" either.
The engine, as most visual novels, is Ren'py, so expect a familiar interface; quick load/save, load/save files (not really needed), text speed options, skipping seen text, auto text and a speed option, etc.
As someone who has played a large number of visual novels, and I prefer them to be kinetic anyhow, I can't recommend this VN. Despite buying it 50% off for $2.50, the thirty minutes I spent reading it (and there after leaving it on for the trading cards) I can't say it was worth my money. I felt dissatified with the, like many said, "childish" ending. Sure, Shan Gui had it's sweet moments, and a relaxing atmosphere, but I couldn't bring myself to like plot. It wasn't as "touching" as I hoped, it wasn't really touching at all.
The music is great and the CGs are wonderfully done, though some may not appreciate the art style (like one person said, "dorito eyes"). However, there definitely are some inconsistenciess. But that's not what bothered me. I felt that some moments of the story were ruined by the sexualized art. Han Hui, a college student, does have noticeable affection towards He Jia, a girl that appears to be around 12 or 13. Somehow what seemed to be innocent in the text itself, with the images, it gave a that vibe Han Hui had a sexual attraction towards her. The CG of He Jia in her panties (actually there's...two), didn't help with that. It felt awkward, if anything.
The voice acting in Shan Gui is a nice addition, despite it being a bit muffled at times. Han Hui is unfortunately monotone throughout, but He Jia is done rather nicely. Voices can be turned off if it bothers you. And as others have said, the translations are somewhat poor, but there is going to be a patch later on, redoing the translation. The wiki links provided in the text is nice though, providing background information to what many people would not be familar with.
The other extras are pretty nice though.There are trading cards are worth around $0.60 cents a piece, and you get 3 of them for just buying the game. There is also a free OST. And like most said, getting 100% in achievements is extremely easy, just play once and watch the credits in the extra menu.
Shan Gui isn't a bad VN by all means, but it just wasn't for me. Even for a $2.50 price tag, it felt a bit steep for the 30 minutes I wasted, and I couldn't get myself into it. The game suffers from some minor inconsistencies, translation errors, and quality of the voice acting, which might bother some. But it might be worth a shot for those who would like a short, relaxing, sweet visual novel.