While it looks like a game for kids, it's actually a deviously challenging puzzler that respects the player's intelligence and rewards exploration in a way very few games do.
At the core of the game lies a metroidvania-style interconnected world with several ways to reach most locations, but unlike actual metroidvanias, there are no artificial barriers requiring special abilities. The only thing stopping you from breaking away from the main path and climbing a seemingly unreachable area is lack of knowledge on how to combine the level's resources to get there - knowledge that you will pick up in the process of solving simpler puzzles, or figure out yourself using common logic and a little creativity. As a result, the game has very little backtracking for a Metroidvania world, unless you consciously choose to skip harder puzzles and come back later.
The player is only given two abilities, both unlocked from the start, and no inventory. This very limited toolkit is nonetheless used to create very challenging puzzles, even when all the elements are present on screen. Many puzzles misdirect the player with elements that play no part in the solution, or require "smuggling out" elements from other puzzles.
There are no tutorials and no handholding, the game has no text whatsoever. You learn how to interact with game elements and make them interact with each other by experimenting and solving puzzles where figuring out the interaction is the only way to proceed forward. Figuring out the game's mechanics is the main puzzle.
The art style may not be unique, but it is not low-effort by any means - it is clean, crisp and a pleasure to look at. The background for most levels are simply wonderful.
Last but not least, most the Steam achievements actually add value to the game and serve as puzzles themselves.
This game is a crazy bargain for the price even when not on sale, and I would recommend it to anyone seeking a laid back but well-designed brain tickler.