DDLC is a disturbing (good, but disturbing) game that opens as a bright cheerful one. So long as the description explained what the user is in for later on, I think Google shouldn't have done this. I haven't seen the Android version; I played it on PC, but as it is basically a "visual novel" I doubt there was very much difference between them.
I played 30 minutes and realized my personal trigger is sickeningly "cute" anime girls, and there's no warnings for that. Maybe I'll keep going and try to treat it as an artistic experience but I'm definitely not enjoying it so far and I'm just in the introduction.