I think there are a lot of good ideas here, but unfortunately I don't think this really landed for me as a cohesive final product the way it apparently did for everyone else. I've actually had a bit of a tough time trying to sort out why, but I'll try to do my best talking it through and hopefully it makes some degree of sense.
Spoilers and such going forward.
Presentation is solid, if occasionally inconsistent. I don't have any complaints about the sprites, and the CGs at the end were well done in my opinion as well, so full credit to the artist. The VN used grayscale and color to differentiate between current events and flashbacks, and while this isn't exactly new or innovative, it's popular for a reason and I think it worked well as shorthand here.
Sound was a bit more inconsistent - there's good use of ambient SFX for the interchange scenes, but the flashbacks are strangely mostly silent. Given the effort put into the sound in the former, I'd guess this was an intentional decision, but there are also moments where music does play in the flashbacks like at the end of the scene in Jacob's room at the frat house, so I'm not sure what exactly the design philosophy was here.
Writing was mechanically decent, though there did seem to be a greater number of proofreading errors as the script went on. Nothing particularly egregious, but there were some noticeable ones like "Elased Time" when there was nothing else on screen.
As a final point for presentation, I don't take issue with the default Renpy UI (it's a game jam and this was a small team, really not a big deal), but I think the colors for the dialogue tags for Redmond and "Friend" were too close. Obviously they're still different colors, but since the (or at least a) purpose of the colored nametags is to help provide quick shorthand for who's speaking, I think literally any other color would have worked better - there are only three speaking roles in the VN so there were plenty of options.
Getting into theme and character, I see the vision here. The interchange is a visual depiction of a convergence of two different worlds or perspectives, intended to be momentary and ephemeral unless you're stuck there like Redmond is. The interstate connects, but it also divides, in the same way that Redmond's feeling of connection with Jacob caused him to disconnect from Grace and the rest of his hometown. The interstate is technologically impressive, in the same way that college represents promise and potential, but it also represents a barrier to nature, in this case Redmond's roots.
Jacob's attitude towards college is also representative of his relationship with Redmond - both are a step on the journey, not a destination. When all is said and done, Grace's significance in Redmond's memory is as Grace; Jacob's is simply as "Friend". Jacob is just a step on the journey for Redmond too, whether he intended it or not. (less important side note here but while I get the thematic throughline here [or maybe I don't, idk], I disagree with the decision to withhold Jacob's name - even if that's the conclusion Redmond will eventually come to, that's not how Redmond would see Jacob in his memories while he's having those flashbacks)
This is all fine, but as mentioned above, the whole thing didn't quite land for me. There's a line when Redmond and Grace are arguing in the kitchen where Redmond says "You know how Greg is sometimes." My initial reaction to this was "I'm glad she does because I sure don't" and this made something else kinda click for me - I really still don't know all that much about Redmond.
I know he's gay. I know there was some pushback to him coming out. I know he feels like he doesn't fit in in his hometown. I know he values his relationship with his sister. I know he had sex multiple times with an otter that he had unrequited (at least in scale) feelings for. And that's about it. There are a lot of vague references to prior events, but right now Redmond feels more like an outline than a fully fleshed out character.
What exactly is he hoping to get out of college? What's his current life like in Mallville? He's closest with his sister, but does he have anyone else there besides his family? Does he have any interactions with Greg, or anyone else important to them? Should he? Are his career prospects limited? Does he care about that? When he makes the decision to go back to Mallville, is there anything waiting for him there other than being an uncle and the Apple Festival? Has there been anything else of value to his college experience besides hooking up with Jacob? What else would he be losing if he abandons that path? The climax mentions that Redmond and Jacob don't really have much in common besides superficial attraction, but the reader has to take that at face value because they don't really get much about what either character's interests really are other than Jacob's involvement with the frat and Redmond's attachment to his hometown.
You don't necessarily have to go into all of these things, but at least some would go a long way into making Redmond more complex and interesting rather than just a vehicle for the metaphor. As it stands, the sometimes thin characterization combined with the disjointed (again, intentional, I get it) narrative structure made this kind of a slow read for me, and I think adding details in some of these areas would have helped build that connection and momentum sooner. Or maybe not, no one else had a problem with it apparently so maybe I'm the weird one.
Also, yeah, I have no idea what the unmanned honking car was about.
Anyway, hopefully that wasn't too much of a mess - as stated in the topline, I didn't dislike this at all and it's clear there was a lot of effort put into it. Even if it didn't land for me personally, I think there's still plenty here to be proud of.