My first impression of this game is: Paranoia. I often have to remind myself to smile so as to keep my mood up; I don't find it patronizing, and I wish that more people told me to smile more often. I think of a quote by Thich Nhat Hanh about the external importance of any one person's smile. Be that as it may, a smile which is forced does tend to come off as a grimace, and this can be effectively grim. This reminds me of the animated film Inside Out, wherein Sadness is redeemed as a constructive, if inconvenient, emotion. Some other themes I noticed were individualism and "self-reliance" set against the backdrop of conformism and interdependence. I'm not sure why the game would need to lean one way or the other; I should have to play it to find out. Overall: this looks like an ambitious aesthetic experiment and a reflection upon mental illness. I have no comment, except that I still think some people should smile more, however overwhelming, multifarious and convoluted their reasons may be to frown.
Lin Ji.