The key word here is "divisive."
Open Critic - 83
Metacritic - 79
Destructoid - 100
Dualshockers - 95
Game Revoultion - 90
Polygon - 80
Game Informer - 70
RPG Site - 60
Anime News Network - A
I'll add more in a bit.
Open Critic - 83
Metacritic - 79
Destructoid - 100
One week isn't enough to really understand everything about this game. The campaign is complete, but there is much still to do with the post-game content, trophies and what I can only assume are many more mysteries I can solve. Danganronpa V3: Killing Harmony is not a game you should just read about or watch a Let's Play of on YouTube. It's a game that absolutely demands 40 hours or more of your time. You must experience it first-hand if you truly want to understand what Team Danganronpa is trying to tell us.
Dualshockers - 95
Danganronpa V3: Killing Harmony is by far the best sequel to a video game series that I have ever played.
Game Revoultion - 90
There's no doubt that Danganronpa V3 has its issues, the localization and forced message to name a few. Despite my gripes with those, I can't help but be amazed by its story, characters, and cases. Above all else, V3 is the highest point for the series. Though it is certain to be polarizing and divisive among its fanbase, it comes just inches short of being a masterpiece in my book.
Polygon - 80
Danganronpa V3 is one-of-a-kind. It got me attached to characters within minutes before ripping out my heart. It twisted and turned in every direction, and there was always something new and even more terrifying on the way, leaving me little time to mourn my fallen friends. This may be a game that's mostly about reading text, but it still managed to make my heart race.
Game Informer - 70
The mysteries of Danganronpa V3 may not offer the same rewarding highs as previous entries, but the core formula remains entertaining despite some missteps. I still had fun piecing together the murders and learning about the characters, which is enough to help V3 earn its passing grade, though it isn't graduating with honors.
RPG Site - 60
Danganronpa V3: Killing Harmony is destined to be a title the fans are going to be split over. The game has a very clear message it wants to rub off on the player, and it's the sort of thing you're going to have to mull over for a while to determine whether or not it earns its thesis. For me, it all just felt like desperation laced with fatigue. When the game wasn't dragging me through incredibly long-winded exposition and plot bits, it was disappointing me with the direction the story took. If Spike Chunsoft wanted me to get a sense of closure from the series, they may have succeeded, because I'm not sure I'm up for another one
Anime News Network - A
I'll be blunt: the finale to Danganronpa V3 is going to cause an absolute uproar, a wildfire in Danganronpa fandom that might not die down for a long time. It stands among the most ballsy conclusions to a franchise I have ever seen in any medium. (That's not to say Danganronpa as a whole will end with V3, but it certainly could.) It is so outrageous that I had to break my own personal policy of not writing in first person to tell you how outrageous it is. I know that sounds hyperbolic, so I wish I could defend this assertion with more concrete details, but I couldn't bear to do so. This ending is so important to how you will personally process everything leading up to it that spoilers will ruin Danganronpa V3 for you. Now I'm a firm believer that spoilers can't ruin most good stories, even the twist-driven mysteries spun by Danganronpa 1 and 2. The journey matters more than the destination, spoilers are overemphasized in entertainment discourse, blah blah blah, but no, this is a rare exception: Spoilers Will Ruin Danganronpa V3 For You. I know the curiosity can be overwhelming with this much hype, but you might not be able to even enjoy this game if you know how it ends early on, so avoid as much information as possible.
I'll add more in a bit.