After the 1st gameplay I cried hard (well not immediately) (as someone who rarely sheds tears). It took a huge emotional toll. The 2nd gameplay is weird. The 3rd one binds everything together. For me, Cathy is the heart of the game. The names "Mark" and "Nicole" are directly taken from the creator's (Polychroma Games) former project "Seen" (a chatting game... with multiple endings... available on Android... probably on iOS too). I loved that bit. Probably the best game ever (not gameplay wise but storyline makes up for it). As someone who knows basic quantum mechanics, I appreciate their take on it. (altbeit wrong... unfortunately) A solid 92/100.
Never leave Mark, Cathy!!