This game contains several puzzles, all different from each other and some very difficult.
The game doesn't have a story, as this type of game doesn't need one, but it still has a basic explanation of why you are in the area.
The graphic sector is very standard, various assets are reused, but I don't consider it a malus as it is not the main focus of the game and they still serve their purpose quite well.
There are some bugs (I was able to skip an entire area because the area switch trigger was in front of and not behind the final room door).
Very recommended game if you love the genre and want to challenge your brain.