It's running an average of 77, 78 on Metacritic. A few excerpts:
Gamespot, 9/10: "For me, Herdling is a game about rediscovering one's purpose. It is not the purpose of the calicorns to be stuck rudderless in a dying cityscape, where litter and neglect team to wear them down to nothingness. Neither does it seem to be the protagonist's purpose to be there, based on the sad squalor they're found in to start the game. Together, the child and their ever-growing herd of companions--not pets--go on an often heartwarming, sometimes heart-wrenching, adventure back to nature. It's a journey I'll remember for a long time thanks to its depiction of animals as unique individuals who, very much like us, are chiefly seeking love and safety. It was one of my favorite experiences in video games to help them find that safety and to feel that love."
Gaming Bible, 9/10: "In having a minimalist approach to its storytelling and game mechanics, Herdling is able to bring closer attention to its overarching message about hardship and found families within nomadic, unhoused groups. It does an excellent job at balancing these themes in a digestible way, leaving you room to sit back and really take in what it's trying to say."
Xbox Era, 88: "Herdling is special. It isn't technically amazing, though it can be stupefyingly beautiful. No spoilers, like always, but the last 90 minutes of my 3 and ½ hour playthrough had my heart in my throat, and at the end, a few tears in my eyes. I did the thing, I lost no one, and it felt amazing. I was proud of not having these big dumb digital beasties die and damn it… I'm proud of that. There is so much more I could say, but go into this one with no spoilers and proper expectations. It's a vibe, an experience, and not a gameplay masterpiece.
Finger Guns, 80: "I think it's not since Stray that I've just so instantly fallen for the charm and atmosphere of a peaceful animal-centred game. Herdling may be about shepherding a small herd of fictious creatures called Calicorns across a great journey to the mountains, rather than the journey of a cat across a cyberpunk city, but the atmosphere, the detail, the heartwarming moments and the heartwrenching ones too, are all exceptionally close to that game's style."
Gaming Bolt, 8/10: "The Good: Art direction, soundtrack and presentation incredibly facilitate this journey of bonding between the shepherd and their herd. Unique mechanics are easy to pick up but interesting wrinkles keep them fresh throughout. Really makes you feel bonded with your herd through thick and thin. The Bad: The puzzles can feel incredibly easy. Campaign is fairly linear despite the different alternate routes through environments. Some performance drops in certain places. Odd antialiasing on Calicorn fur. Great: Herdling continues Okamotive's reputation for unorthodox titles that resonate in unique ways. Desolate and survival-driven, yet warm and freeing, it's an adventure unlike any other despite the occasional hiccups."
Sounds like my kind of game, I'll have to pick it up.