It's also immediately obvious that it's just an RPG Maker game with very little effort put in to conceal that fact. RPG Maker games generally don't do well, because 99% of them are garbage, and those that aren't go to great lengths to distinguish themselves visually, like Yume Nikki, and I don't know if that title ever was a commercial success.
Nevertheless its review score average is equal to Stardew Valley's. Although I concede that people's expectations may be lower when buying this game, and that may make them less likely to leave a negative review.