izigame.me

Here's the short answer. It a beautiful; mechanically rich puzzle game. Its puzzles are genuinely some of the best I've seen and they are truly unique. Highly recommend playing it, but only if you're fine with never solving all of its puzzles.
Now for the long answer...The whole game relies on exploration of a gorgeous and massive map with almost no defined direction. So you're free to go pretty much anywhere and solve each section of the world in the order you deem fit, which is great for when you eventually get stuck on a puzzle you don't know the rules to and can't progress in that particular area; but its also bad because you never know where you should go to learn rules to mechanics you've never seen.
This game creates a sort of game loop where you do a few puzzles, get stuck, go explore, solve some more puzzle somewhere else, and after hours of doing that, you find a tutorial for a mechanic you saw earlier; so now you have to go back and solve those puzzles, which lead to either more puzzles you don't know the rules to, or a dead end with a cryptic hint that you won't understand for a long...long time.
There are some puzzle that never give you tutorials, and you just have to infer to rules from the puzzle you get, which can be a little difficult. But in most cases, the puzzles are designed in a way where you CAN find the knowledge to solve them. I'm not sure if I'm particularly good at puzzling or if this type of puzzle is just something I'm good at, but I didn't need to look up solutions for the majority of the puzzles, I had solved around 500+ puzzles before I finally had to look up a solution to a puzzle which a lot of people said was one of the hardest to figure out. So take this paragraph with a pinch of salt if you're not a seasoned puzzle solver...in fact, I'd say that you REALLY shouldn't play this game unless you have played an extensive amount of puzzle games before it, because this will test your patience, this game will ask you to be good at visualizing multi-step processes in your head, making leaps of logic, MEMORIZING PATTERNS, constantly changing your perspective (literally and figuratively) and extrapolating information from small amount of hints.
Ok that paragraph went on a little long, but in short...if you want to solve this game without guides...it is going to be an arduous task. Now for a bit more spoiler-y stuff (I'll try to keep the spoilers to a minimum tho), so if you want to go in with no knowledge of the story and world-building aspects; don't read any further.
So the game has gotten some negative press for its story elements, and for a justified reason (not a good reason mind you, just justified). As you play the game, you will find these small audio players that you can interact with; which will start an audio log. These audio logs talk about philosophy and things that honestly feel very..."artsy" in nature. Ones I listened to a few of them, I stopped caring or paying any mind to them. None of the audio logs are needed to solve the puzzles and listening to them felt like the game creator was trying to be seen as "sophisticated" and as "an intellectual"; which honestly might be the point? not too sure?
Then there is the controversial ending of the game (major spoilers!). You've been solving hundreds of puzzles at this point, and you finally find your way to the top of the mountain, for what seems like the final puzzle. To your shock, when you solve those puzzles a door opens up and you head inside the mountain into a portal-esc interior. The puzzles only get harder and challenge you in new unconventional ways and you keep struggling your way down level after level of increasingly more challenging concepts. Then you finally get to the bottom; solve 8 of the hardest to visualize puzzles (their not really that hard but its like really hard to wrap your head around them visually) and then you're presented with an elevator. You take the elevator and it takes you on a long.....long....long ride through the entire map; showing all the puzzles turning off and resetting back to being unsolved...and at the end of the ride, you're at the beginning and the game closes, when you open it back up, you're at the start of the game. None of your efforts mattered, all the puzzles you solved meant nothing, the world you awed at for hours...meant nothing. There is no explanation for why you're here, why the people are turned to stone, why you're solving these puzzles...no explanation for anything.
Now to a lot of people this might be a little upsetting, which I can sympathies with; but in all honestly I feel like it was very clear from the start that this game was all about solving puzzles...just because you want to solve some good puzzles. Because there is no achievements for solving puzzles, there is nothing that indicates the percentage of puzzles you've done; only a number of puzzles you've solved. There is nothing in the game that tells you "you've done it all, you can quit now" and when people talk about 100% this game, it is based on an agreed amount of puzzles shown in your puzzle count. which isn't 100% accurate (there is a section in the game where you solve a bunch of puzzles and they count as less than what you actually solve) and its not 100% confirmed to be the true number of puzzles in the game. Bottom line is that 100% this game was never the point of the game, the game never expects you to solve all the puzzles and IT WILL NOT REWARD YOU FOR DOING SO.
So If you've gotten this far into my review, just know that its a great puzzle game...But for the love of god, stop playing it when you stop having fun solving the puzzles, you will gain nothing from solving any more than you want to solve...and also there is a puzzle that literally takes an hour of REAL TIME WAITING to solve...so there's that as well...
Get this game, solve like 450-500 puzzles and be done with it. The visceral feeling of solving a puzzle that has been stumping you for hours is a feeling that this game will keep giving you in spades, but its all its going to give you; nothing more, nothing less. If that sounds like a good time to you; if you enjoy purely mechanical, incredibly designed puzzles placed into a pretty scenery that means absolutely nothing outside of its mechanical purposes; you will love this game.
If you want a story; a purpose for solving puzzles, then you will come out of this disappointed and with a feeling like you've wasted your time.