This is yet another classic game created by Fumito Ueda and Team Ico. If you've played their other games like Ico, or Shadow of the Colossus, than you pretty much know, what type of game it's going to be. And even with that prior knowledge, this game is an experience unlike any other.
There's some classic Team Ico gripes, like issues with the camera, the movement feeling weighty and unwieldy, and a bit of jank with control issues. But, in this case, it somehow adheres to the experience. You are a young boy, who is not that surefooted and probably wouldn't be as athletic or nimble as an adult Nathan Drake or Laura Croft. This also gives a lot of suspense to the intimidating tight-rope-esque walking and jumping sequences from great heights, because you're not that athletic and you have to be more precise compared to most modern games where the platforming is more forgiving. A lot of people are also going to complain about the difficulty in controlling Trico, your giant pet companion who is needed for combat, a lot of traversal and also to solve many of the game's puzzles. I personally, had no issues with this. Trico is an animal, and needs a certain amount of patience, and can have a will of its own, and get distracted easily etc. I found out quickly that if I spammed directions and commands it would get confused--something that I suspect many people do, especially if impatient. If i gave it a single command and waited it would either do it, and take some time (like gathering itself for a bit to make a big leap, just like a real-life cat would) or, it would let me know that its not possible and the solution lies elsewhere. This is a game that being an animal lover, and having grown up around pets would greatly expand the experience. Trico also follows your commands more and more as your bond grows throughout the game. It's things like this, that some people will not like, but others will greatly like, since nothing else in gaming does this.
There atmosphere and visual design is beautiful. The crumbling ruins are filled with aging beauty and elements of nature poking through and taking over, and even some sparse futuristic elements embedded here and there as well. I feel that Trico is one of the most stunning achievements in gaming. The way it looks, acts, and interacts makes it feel like a living, breathing, genuine creature. Even though graphically, some elements feel a bit dated, like the main character, the visual design and overall design and mechanics of Trico makes this game in some ways, feel like the most next-gen game out there right now. There's details in the world also, like side paths that you could spend some time on that lead to nowhere, compared to most mainstream games (even great ones by Naughty Dog) where the paths and climbing areas are clearly illuminated and marked with paint and so forth. These kind of details though, are things that some people are not going to like at all. I personally thought it gave the world, a huge amount of added breathing space and atmosphere. It felt more real and immersive as a result.
The thing I most like to experience in movies or games is to be transported to worlds or places or have experiences that I could never imagine. This game is something that is timeless in a sense, in that it exists in its own space, separate from the entire history of the medium. It is so different and unique from anything else, even from other "artistic" or minimalist games like Journey or a lot of modern indie games, or even the other two Team Ico games for that matter. Make no mistake this a love-it or hate-it type of game, that has elements that a lot of people will find frustrating and that a lot of other people will find endearing and incredible. Do your research to see if this is the type of game that you will enjoy, because I personally think it's the best out of the 3 Fumito Ueda and Team Ico games and the other two games are already all-time classics.