This is less of a rating than it is a forewarning for folks who may be considering picking this game up.

From the onset/outside, I think this game presents itself as an RPG/Dating Sim. If you attempt to play it like either of those genres, however, you're probably gonna wind up confused and frustrated. It's probably safe to that this is the case for many of the folks who've been hanging out in the comments trying to figure out why they can't unlock x scene for y character. 

At this stage in the development of the game, the structure of an overarching plot is present. The story being told is done so in a subtly linear fashion, with new developments being delivered over the course of each given character's dialogue and scenes. I imagine that once a player has exhausted all available dialogue choices with whichever character first catches their fancy, only then may they begin to realize how progress works in this game. GameOver may appear to be a role-playing dating sim, but it really plays more like a kinky point-and-click adventure game. A brief aside, it's worth noting that kink is an upfront focus of the game. If a player wants to progress through the plot and characters' storylines, they will need to enable every kink the game includes. I have no strong feelings on this requirement, but I do think it's fair to say that may be a tripping point for many players, and giving folks the option to disable kinks without clearly explaining the limitations that imposes is a bit misleading.

In regard to how the game works as a detective adventure game, this is where the design choices "shine" (your experience with the genre may flavor your opinion on this wildly in many different directions). If the player is willing to approach GameOver on the terms of the genre it is, as opposed to the genre it appears to be, then at least the structure of the game begins to make sense. In writing this, it is only now dawning on me that there's a reasonable chance that this is all entirely intentional. 
(For those who don't know, classic PC adventure games are notorious for having an absurd number of game over scenes in store for players to experience while jumping through the not-always-obvious hoops required to progress. Sound familiar? Maybe I'm reaching, but it seems reasonable to me.)

All of this to say, I have some deep respect for what this game accomplishes, even if don't personally have the patience to engage with it on its own terms. In a sea of abandonware and soulless copycats, this game is... pretty cool. Hope this helps!