Very good experience! Puzzles are well balanced and logical with beautiful graphics. A game you should play if you like puzzles doable with no frustations but thinking.

The game consists of many levels, each taking max 5 minutes to solve. In total around 5h playtime.
I personally would prefer fewer, but more complicated levels with interleaving puzzle lines.
Most levels are very linear.

The puzzles and minigames are very simple, and in most cases quite obvious.
Quite often they aren't really minigames at all, and more of "tower of hanoi" style.
You just do what you have to do, without the need to think about them.
Often there were just few combinations and simply by playing with the switches the puzzle solved by accident.

Many puzzles are very repetitive - especially in the first levels - and feel more like a chore.
This is due to the symmetric level design. Usually the levels are like:
You find two levers to open one box on each side, containing each a key, that fit to two chests on each side, containing two special shaped keys. Those special shaped keys fit to two windows on each side, containing two gears. Those gears then need to be entered on front or backside of the "door" and lead to a minigame. After solving it, the door opens.

The best part of the game are the bonus levels, which are a bit more complex and well done.
Also the visuals are great.

If it is on sale and if you prefer simple puzzle games, or maybe looking for puzzle games for kids, I recommend buying the game.
If not, I don't recommend the game.

It's the longest and most difficult game by this developer, which isn't saying much since it's still pretty easy. The worlds are basically random little diorama-looking doors with puzzles you need to solve. They are not too difficult because the levels are small and simple, but occasionally the game will throw something challenging at you. There are just a lot of levels, nearly 50 so after a while fatigue sets in.

The puzzles are logical but the order is not always clear. There were a couple times that I got truly frustrated, but that's probably because I finished this game all at once instead of taking much-needed breaks. If you get stuck you can ask for a hint or skip the puzzle so it doesn't really matter. This makes this a casual game that can be a slight challenge if you play without skipping the puzzles. There are also gems and scrolls hidden on each level that, while not hard to find, can add a bit of stress since if you miss them you have to go back into the level to grab them. Getting all the gems unlocks two bonus levels on each of the three chapters.

The audio and graphic are fine for what they are, and the overall presentation is decent. What exists of a story is kind of nonsense but at least it's there to tie the whole thing together. I would give this game a 7/10, while not at all hard it does take some time to work through and feels satisfying to complete. I think Boxes by the same developer is a little better of a game despite being easier.