The game combines the path-drawing mechanics of Cosmic Express with the chemical bond-based puzzles of Sokobond. Players must draw a path that connects atoms into a complete molecule, with atoms only bonding if they have free electrons to share.

The puzzles start simple but gradually introduce new mechanics, such as atoms being outside the level area or starting as ions with missing electrons. Players must plan their paths carefully to collect all the required elements while avoiding collisions.

The ability to visualize the resulting molecule shape as the player builds the path is praised for enabling more logical, deductive problem-solving, rather than relying on trial and error.

The game's constraints, such as not being able to retrace steps and having to end at a specific point, add an extra layer of challenge to the path-building. Players must plan their routes meticulously to ensure they can complete the molecule.

The introduction of new mechanics, like bridges that allow crossing the same square twice and pylons that can bend the molecule, gradually increases the complexity of the puzzles in an intuitive way.

The ability to undo mistakes and retrace steps is appreciated, as it reduces frustration and allows players to experiment with different approaches.

The minimalist art style and soothing soundtrack create a calming, "zen-like" atmosphere that complements the puzzle-solving experience.

The inclusion of fun, educational facts about chemistry between levels is seen as a nice touch that enhances the game's theme.